I do wonder if the strict rationing of precious votes results in limited intel. Vote counts generally seem low for the number of users here. Many feature suggestions have more Likes than votes, but I imagine only votes are noticed.
Being perpetually out of votes and always having to triage & sacrifice to vote on anything new is a significant barrier. I review my existing votes to see how I can free up votes… but none of the requests are unworthy. They just scrolled off the feed and got forgotten.
Am I to give up on them?
Should I bump my favorites with a comment? Having voted on a feature, commenting “Yeah, good idea!” feels like superflous clutter.
Good ideas sit with one or two votes. Are people not discovering them, not interested, or… are they just out of votes? 
Increasing limits wouldn’t require a bunch of coding, and it feels like it would help – but I also think of how widening a road to reduce traffic just invites more traffic and you’re back where you started.
Just spitballing here… some bunch-of-coding functional changes as alternatives to a hard limit:
- Allocate a number of votes per month based on TL. (On “votes day” there’s a flurry of activity as people visit Contribute > Feature and evaluate open items…)
…or, as heliosurge mentioned, eventually release votes:
- Release a used vote after a set time, or
- Staff review stale feature requests on a rolling basis and either a.) bump topic for another chance, or b.) comment with “no plans to address” and release votes.
…In either case, cast votes remain in place, and users can’t exceed their vote allocation by further un-voting these topics.
(Easy for me to say. That’s probably a lot of coding 
)