I’ve never had any problems with dependency resolution in the past 3 years give or take, and I’m using x86_64. If its blocks a quick google search usually lets you see what package needs to be removed. If its because they come up masked then you can unmask them, if for example they are still being tested on your architecture. To me it’s just Gentoo asking you, “Do you really want to install this, because there is some stuff you should know…” it’s very much about choice.
I use Xmonad. I have 3 monitors and a TV connected, I can shift programs between them by pressing 3 keys. I can’t stress how powerful its keyboard oriented approach is when dealing with more than one screen. It’s method of handling the screens. (Each screen displays a different virtual desktop from the same set of virtual desktops.) Is nothing short of genius in my opinion. You can throw everything from one screen onto another with again, just pressing 3 keys. It’s also very minimalist, no icons, no taskbars and no titlebars. (unless you want to add them) It can also tile windows automatically so you can have many programs open and it’ll place them so all are visible and the screen is filled. It really makes the most out of the space on the screen in my opinion and focuses on doing what a WM should, letting you put stuff where and how you want it rather than looking pretty, but then again, I’m biased.