Thanks for posting this @santigs 
I’m in favour of this proposal (obviously), as I proposed long ago that Giveth should have an NFT gallery on Opensea or elsewhere, and make use of NFT utilities.
There have been more talks and ideas on how we can use NFT’s, this one by @WhyldWanderer and this one by @paxthemax
I would love to have more discussion about this and possibly create an overall NFT strategy for Giveth, making this proposal potentially the first one to execute.
Looking forward hearing what others say.