If there is no vote on Soulbound cards, players likely will start seeing how much of a facade the entire proposals are and if there is a vote they really need to make it so that soulbound cards one way or another benefits SPS Holders otherwise everyone would vote against it and the only way for it to pass if they would use their own big stake in SPS to manipulate the outcome.
If there were a vote, I give it a very low probability of passing.