Hi,
I think it would be beneficial to implement a vote based patch system as this would accurately represent what the CoA community wants. For example with the ongoing class balances, I believe a voting system prior to large changes/buffs/nerfs would help, or even afterwards so you can accurately gauge what people think of them particular changes.
As currently there are very few people commenting on the feedback posts and therefore you are only getting the opinion of a small percentage of the community, I think a vote system would encourage a larger percentage of the community to express how they feel about the patch as maybe they don't feel comfortable writing on the forums, for example if their English isn't very good or are simply too lazy to take the time to write a post.
Thanks.