I think it's a good idea in principle, but as soon as you split into subgenres some twat will be saying,

"You stupid penis eating cuntface, that ain't fuckin' technical death, thats pseudo-blast-death-gore-slam-grind. Hahaha you are such a worthless cunt. DIEDIEDIE!!!!. Ban him. RAAAAAHHHH"

ok maybe not to that extent, but you see my point. I have used the search function several times to get band recommendations, that really is all you need.