Heyo! I'm apart of the dev team and am glad to be seeing suggestions for the game here! Obviously none of us have total control over the project or anything, but I can share my personal thoughts. The map pool's something I've actually been thinking about a fair bit lately. Personally I'm on the side of having a smaller pool with the most ideal maps, both for fun gameplay and visuals that match the classic aesthetic (I'm an artist so that's a big factor for me). There are actually a few maps in the current pool that I'm not super sure about in regards to that last category. I'd say, in an ideal world, we'd be able to re-artpass maps like the ones you mentioned to look as close to official Valve map sensibilities of the classic era. But then that runs into the issue that Vintage mentioned of having trouble contacting mappers and acquiring permission. And with that I'll end my tangent.
Thanks for the feedback! I've definitely been wanting to discuss the map pool further internally.
Stay safe!
- Waugh