You mean Voting and this one?
I feel like they’ve two fairly different goals in mind. Are you thinking a merged plugin would allow you to vote on threads à la posts in this plugin, or retain Voting’s existing functionality?
I would expect this one to allow you to vote with either no restriction at all, or very generous limits.
That you’ve a limited number of votes in Voting and need to think carefully about where to spend them gives rise to an experience I’d be sorry to lose. As a former Community Manager in the games industry, time was sometimes a zero-sum game for the team, and having our Feedback and Suggestions category use Voting gave the community a chance to help shape our priorities. Whereas on Reddit the community might upvote every suggestion - “we might as well have this, even if I don’t personally want or need it” - with this plugin, people could advocate for some work being prioritised.
tl;dr: One of these reminds me of Stack Overflow or Reddit. The other, UserVoice.