I think instead of trying CRPGs, you should try indentation and line breaks.
wrt planescape, installing the fan patches is probably a good idea?
There's lots of missable stuff and plot points where you can do one thing or another but not both. Don't worry about these. PST is more focused on puzzle solving and dealing with NPCs than it is on combat.
If you play Ultima 4, XU4 adds midi music (from the Apple version?) and slightly improved graphics. With U4, just take notes about everything, since there's no in-game journal.
Xenogears kind of sucks.