It will be nice if on that page: https://umod.org/games



It will show what kind of support every game have (basic hooks, extended hooks, rcon support, etc) 

I feel that would be a bit cluttered, so probably not likely to happen. That games page is meant to be a clean view of the supported games, which then links to what will essentially be a sub-site for each.

A more suitable addition would be a link to the official website of the game

I don't know that a link would be necessary there.