Liquid cooling has been a thing for quite a while and I've been noticing more people going back to air coolers.
Honestly I prefer liquid just because they're easier for me to install.
Case is plenty big enough with how it's compartmentalized. https://www.newegg.com/black-cooler-master-haf-series-atx-desktop/p/N82E16811119265?Description=coolermaster&cm_re=coolermaster-_-11-119-265-_-Product
That's at least the 2nd time I've seen him on there. First thread didn't get a lot of comments and the one you found only has 2 comments including your own.
Currently on my 2nd play through on the Index. Played it the first time on normal and current play through is on hard with Gnome Chompski in tow. The main difference I've noticed is that the Combine and Antlions take a few more bullets. Speaking of segues, ammo seems to be a little harder to keep but the game does a good job of making sure you never run out of ammo with magical spawns. It's nice playing a game armed with the knowledge gained from the first play though but I'm still discovering new things.
Diplomacy. Lure it out with whatever roaches eat, become friends with it, learn the ways of it's people, come to an understanding and then smack it with a shoe.