Has anyone played all the way through any mouse-centric CRPGs on the Deck? (Pillars of Eternity, Pathfinder, Wasteland, etc) How playable are these games in comparison to using a mouse. For reference, I really struggle to play these type of games with a laptop trackpad.
All the three games you listed have native controller support as they were released on consoles.
Unfortunately, games having a console release doesn’t mean the PC counterparts always have that specific controller UI :(.
For example Factorio got released on Switch with a new UI, but that UI hasn’t been (yet, it’s in developpment) added to the PC version.