I'll explain then
All SGDL has a special power when it kills your opponent. Firstly, when he kills his opponent, he sends him to the Dark Area, that is, he is erased from existence alongside his body, soul and mind, but it is not only that, the SGDL prevents the opponent from ever existing again and then he is absorbed if becoming part of the SGDL, becomes nothing more than a mere aspect of his being.
The powers are absorbed into the SGDL, we see this in the Digimon Tamers when Beelzebumon absorbed killed several Digimon and gained their powers.
Another example is in Digimon World Re: Digitize Decode where Barbamon and Demon absorb Rina's powers and she ends up running out of powers while Barbamon wins them. Rina remained powerless until she was able to kill Barbamon so she could regain her powers.
This is consistent with other examples of beings becoming one and thus gain the powers of others as in the Jogress, Jogress Evolution, DigiXros, etc (This is most noticeable in the Story series and in Appmon).
So yes, it is consistent in the franchise that a being is completely absorbing another being and with that become one with him end up gaining his powers. And that's what the SGDL do and it has already been shown them absorbing powers in the franchise.
The point here is if we accept this and give the SGDL the powers of who they have absorbed.
If yes then more powers will be added to the SGDL, if not then they will continue with what they already have (which is already very good).
I know it's a tricky subject, but it's an important issue and it can define a lot for SGDLs. Anyway, I await your judgment on this.
Also, what do you think of
Falcomon (Ikuto Noguchi),
Masaru Daimo , and ShineGreymon receiving resistance to
Absorption and
Existence Erasure? In Digimon Savers Another Mission they managed to enter the Dark Area without being absorbed by Lucemon (Something that surprised him).
