Thank you for thinking carefully about this and taking on board all the community feedback, that’s really healthy and really appreciated. 
One thing re an official art gallery is that there could be an incentive system like “if you send an NFT to the art gallery for free, and it meets our standards, then we’ll display it on the front page for a while.”
That helps creators by giving them exposure, helps showcase what is happening on Algorand and allows the foundation to build up a big collection without spending a lot on it.