If we’re going to have a ‘block’ for ‘I’m really against this’, shouldn’t we have an equivalent on the positive side? So either yes/abstain/no or force/yes/abstain/no/block. Otherwise it’s unbalanced.
I’d say remove the ‘block’ feature and just have yes/abstain/no - people can express the strength of their feelings in comments. If a ‘block’ carries more weight than an ordinary no vote, it’s in effect giving some people more than one vote. If you have this facility on one side of the vote, you need it on the other, positive side.