You can't really have a meaningful community vote on conference proposals when there are >100 of them. People cannot realistically process and vote meaningfully on that scale.
I appreciate the democratic spirit of it, but no one is going to give full consideration to the 100th proposal they're reading
One alternative would be to have voters pick the conference theme/track they're interested in, and vote on the proposals in that area of interest
As a bonus, they're likely to pick themes/tracks they're personally knowledgeable about
This is a tiny instance.