The biggest threat, is for countries to perceive this as a reason to ban Bitcoin. If ANY single core developer or a group can influence a development decision with these kind of tactics, these countries might see this as a threat.
I also want the same change, they are pushing for, but I am not willing to sacrifice the integrity of the consensus process to do this.
Some countries already fear the western monopoly on crypto currency development and they would rather steer clear of Bitcoin for that reason.
Today it's the block size, tomorrow it's something bigger... Do you trust this kind of forced decision making?
Get all these parties together and have a global vote or something... but this is wrong...