I'm reading your posts, guys, and think what: if someone wants more hardcore, he could do his personal Hell by himself
Just invent and use your own game rules and play. IMHO, 90% of mod's current stuff works fine and no need to be transformed in some way. Game mechanics is rather flexible and adaptable to different players' styles and skills. 'Hardcore' shouldn't become the main idea of this brilliant mod. I agree that some weapons need to be balanced, but there are nothing critical, I think.
As for me, I'd like to see more types of scenarios, more missions for hunting down dossiers, more USEFUL artifacts and more complicated, interesting and logically righteous way for gathering coordinates of Cydonia:
1) Defeating Syndicate should give us clue how to find Cydonia.
2) Defeating Advent's Government (and researching at least one alien brain) should be necessary too.
3) MIB arc. Oh... There is endless way to use it's potential, which is useless now. Covert operations, outposts, labs, bases, unique techs, persons and artifacts... And the main base, of course, which should be captured for gathering another part of Cydonias's puzzle.