Probably some of the old text-based top-down WRPGs like Planescape: Torment or Neverwinter Nights or even some of the old Ultimas. Pretty much the only WRPG I’ve ever played is the Witcher 3 (I’m a JRPG gamer myself) and I don’t know how I’d react to those old systems but I’ve been curious about them for awhile. Maybe I’ll jump on Shadowrun bandwagon soon enough.
Another game on my “someday, when I’m rich” (as if) list is Panzer Dragoon Saga, since owning it requires a huge investment in money. It’s one of those legendary great JRPGs - and features what I consider to be the single greatest musical track in all of video games https://www.youtube.com/watch?v=NhAAYJNQZ_k - but it’s like impossible to own.
Also the original Nier I’d play if they ever port it to the PS4. I just don’t feel like dusting off my PS3 for anything anymore.
Finally, these have been on my list for a decade: Digital Devil Saga 1 and 2. I actually pulled the trigger on these and bought them off Amazon in 2013 but the order got cancelled. Never went back again.