3 SB Points for poll voting isn't a bad idea, but the problem is that the people then will start voting randomly without test the app/game just for get those 3 SB Points...
Good day.
This is a bit confusing; Members do get 10 SB Points by voting on polls and the poll(s) require "the" member(s) to unlock/purchase the content first, before "that" member can vote on it's poll.
(With the exception of old threads.)
As mentioned before, once you download the app and a short grace period passes, you will be able to vote in the poll for 10 SB Points. This is so that voting cannot be abused to farm SB Points as a few members had tried in the past.
Thanks for taking the time to try and come up with some ideas and if you have any others please share them with us!