A few reasons I think it can hurt the league:
1. The voting thread has no room for discussion. Yes, each thread links to the original suggestion thread where some discussion may have taken place, but sometimes there isn't enough discussion to help make a decision. The suggestions are usually posted in the middle of the season and the voting isn't until the end, which means a lot of times we've forgotten where our minds were when this suggestion was made. This sort of disconnect can lead to uninformed voting.
2. The point incentive for voting also leads to uninformed voting. I'll use myself as an example. Suddenly this morning, there are 12 new polls to vote on. You must vote and post SUBMITTED to get your voting points. That's a lot of polls to vote and post in, and I didn't go back and read the suggestion threads for all of the voting. All I cared about was finishing quickly so I could move on with my life and get points at the end. I'm sure I'm not the only person who rushed through just to get it over with.
3. It creates a lot of work for Doug in addition to the other responsibilities he has. He spent most of the morning putting up these polls. And honestly that isn't a big deal if we all believe that this work is going to make this a better league, but...
4. Are we sure this is doing that? Some of the proposals are head-scratchers to me. The deadline for sims seems arbitrary and not necessary to vote on. The trade restrictions have had a proposal every year and I feel like we're complicating things there. Things like the "desired contract proposal" don't really seem to add to the league at all. And sure, the idea is that people will vote and shoot down stupid rules, but what if not everyone votes? What if some of you are dumb?

I may be the only one who feels this way, but I figured I would just put it out there. I don't think we should vote at the end of the season anymore.