Ok, so I have read through the first bunch of replies until the whole LordXcano debate thingy began.
Soooo... all in all I agree with TLT1 in many points, but let me get a bit more detailed:
So first I want to say that I find the definition of having multiple dimensions of time is in my opinion a bit badly worded. One can have a time dimension in 3 different ways, I think.
First one can have a time dimensions in the way we humans do, that is basically "moving" forward in time and only forward.
Second one can have a time dimension in the way of transcending it, by being able to freely move forward and backwards. So in the way Immeasurable characters have for at least 1 dimension of time.
Third one can actually inhabit extension in a time dimension. Like a hypercubus, but instead of having the 4th side go to an additional space dimension it goes through a time dimension (this one is definable, but kinda makes ones head hurt imagining if you ask me).
If you have multiple dimensions of time all in the first sense, then normal definitions of speed won't work for you anymore. Non the less I wouldn't give such a being Immeasurable speed in our chart, because it doesn't necessarily have the property of outspeeding those with normal speed (or at least I see no reason why it would have that property).
If you have dimensions of time in the second sense you are immeasurable. Like TLT1 said having more temporal dimensions would mean higher speed here, which is also intuitively true.
To give an example: Say you have two characters that view our universe as fiction, like a book. Those characters transcend our time, so they have immeasurable speed and 1 time dimension in second sense. But they also have 1 time dimension in the first sense. One can see that well due to the fact that in relation to each other they have a form of causality. If they have a conversion a statement will come before the reply to it for them. Essentially a subjective time exists.
If there now is a third character that also transcends this "subjective time" of the other two characters, that character would be immeasurable for them, just like the two are for humans.
All 3 of those beings have the same dimensionality, but since the third character has 2 dimensions in second sense, while the others have just 1 it is faster. It can, different than the other two, view the whole conversation the two characters are leading as if it happened at the same time and can, again different than the others (except they have higher temporal dimensional form of time travel) , technically go back in the subjective time of the other two characters and for example use its knowledge of the future of the conversation to change where it is going.
(Or to put it shorter: Human Metaworld Battler couldn't go to past metaworld events on his own. Bernkastel can. Bernkastel would certainly outspeed Metaworld Battler the same way Metaworld Battler would outspeed human world Battler)
If you have temporal dimensions in the third sense than usually you also have in the second, though a being that does not have that is also imaginable.
The importance of the distinction here is that as I said an immeasurable character usually transcends time and has an additional "subjective time" time dimension, but those don't necessarily count towards its dimensionality, because while it "moves" through those it doesn't have extension in those.
Only if the character has temporal dimensions in third sense it also counts towards its dimensionality, given that the dimension is essentially treated semi-spacial in this case.
That is usually the case if one transcends the plane of existence to a higher plane where timelines are objects or something similar.
Should also be obviously the case given that we don't treat humans as having 4 dimensions for moving through time either and is how we rank stuff anyways, but it had to be mentioned for completion sake.
So with all that said I think a better way to put it, than to say that characters with more time dimensions have higher speeds, would be that characters that transcend more time dimensions have higher speed.
Essentially transcending 0 is human, anything higher is immeasurable.
(Which is for the most cases TLT1 definition -1)
Given that this is our current definition of Immeasurable speed there are, as said by others, no changes to existing characters required at all.
All that would change is that it is specified that a character which transcends the "subjective time" of a character that is Immeasurable is actually faster than that character. Or as to say not all Immeasurable characters would be equally Immeasurable just like how Hyperversal characters are equally Hyperversal.
There was also the discussed if 5D = immeasurable it seems. I will be short on this: No.
5 spacial dimensions are not Immeasurable by default. That goes against basic mathematical definitions, is essentially arguing that rotating your point of view changes the speed of characters and goes directly against what DarkLK once specified which was also acknowledged by Kavpeny (See in the comments
here for that). I also don't think that I have ever seen any character ranked based on that in a content revision thread.
I hope that more or less addressed everything that was discussed in the thread.
In regards to the compromise: If necessary I don't mind it, since the set of characters which have Immeasurable as speed is equivalent either way. The decision is technically only really important for vs-threads (since nobody should have a problem if it is mentioned how many time dimensions are transcended somewhere on the profile, given that this information would be a simple fact) so not specifying it at all is fine if necessary.