Not sure how I feel about this. Good points, but 1/10 sounds way too low for me. But if a change does happen, please refund previous purchases because I bought two expansions so far haha.
It seems the problem rather is that we gain so little NX for voting (25 cents equivalent). Having a voting streak bonus that scales up to ~500NX seems OK. Just a thought.
Ideally, I would wish that any cash shop item that is not cosmetic (expansions, lucky charms, ap/sp resets, shop permits, and gachapon) would be tied to mesos or something else like in-game drops to prevent any amount of p2w.