hmm… I see here two issues:
1: Dont you think its redundant ?
I mean - if someone voted, we already can track it through blockchain, isnt it ? So why we need extra badge for [each voting] ?
BUT! - as we already discussed related ideas here - we can reward voters for remarkable actions like those who vote for 10+ proposals 100+ proposals etc… in this case I see reason for POAP (which is the “medals” we talked in the mentioned thread)
2: transfering rights.
Users can transfer these POAP tokens so, in fact someone could get the rewards which just by spending few bucks on the market or even for free as a gift.
May be this is not a big deal… but we have to keep in mind it while thinking about this mechanic.