I'm gonna follow this. I agree with making the key by arcs, hence why I put in my revision thread that I was going to create a key for the church of the masks arc.
I disagree with Jee-Han's speed enormously. The verse is rather consistent in placing Jee-Han above average people, but not at such a ridiculous level as massively hypersonic. Even in today's chapter, the member of the church of masks augmented himself with lightning, and blitzed Han's golems, and Han's only defense was instant manifestation of a golem.
His flight speed is mid tier superhuman, and even doing the math on what that would be at a maximum level, assuming that his stats scale linearly, would only put him at mach 1.4 for flight speed. His combat speed is a different story. As shown, he requires a 2000% increase in time upon himself in order to keep up with someone moving at only the speed of sound. Sung-Gon is the only one who has fought at supersonic speeds within the series before, and how far above supersonic he is, is unquantifiable.
A while ago I did separate the keys for his abilities, and BFR should likely be added for his defense systems, as he transported them to what was likely an ID space created by his ability. It would of course, be noted under that ability that it only works if his house is attacked, as it's a fortress battle kind of system.
I'm willing to help with any changes to his profile, of course. I'm a bit busy as a chemistry student, but I'll help whenever I can. I just strongly disagree with his speed being that high until I see other evidence. I would be cautious about using lightning to scale as in this verse, lightning is the speed of light according to the author. Speed of light attack speed, sure, but superhuman to transonic with 2000x time acceleration, possibly supersonic combat speed.
I did, however, find a place where we may be able to scale him to the feat performed by the foreign guy with the swords, who he one shot. The guy cut up a slab of earth in a second and it could potentially scale to Jee-Han.
This is certainly a long wall of text, but to summarize, I'm all for helping with the revisions, I disagree with the speed upgrade until further evidence is presented, and I've already been working on/considering making a key for the church of the masks arc for quite some time now.