I'd like to postpone the discussion about what would be the optimum percentage for activation of a new BIP that deals with BlockSizeLimit evolution, since this parameter is really not at the core of this "BIP10X". Certainly there is no god-given optimum value, and different people will have different viewpoints here. But this is a secondary discussion, which is distracting from the main topic.

I would prefer a discussion about this BIP10X proposal as such (i.e. its solution once it is operational).

Because, it intends to fix the most criticized weaknesses of BIP100 and BIP101 (criticized not only by community members, but also from my own view), therefore I think it is really worth considering and may have the potential to gain the greatest consensus.