For #1 specifically, this did work fine when I first installed and started using Rapture Pro, and it at some point stopped working.
I found today that when I open a session that had Rapture Pro tracks from before it stopped working, they are all "locked" to the sound they had at the time Rapture Pro stopped working. If I change the presets on those tracks and restart the session, they again sound like they did before Rapture Pro "broke" somehow. And likewise, any Rapture Pro tracks I've created since it stopped working properly always default back to the default preset sound regardless of the stored preset for that track.
It sort of feels like this is some sort of corruption of data in ProgramData or in the registry or something. And I am fairly certain that it happened when I tried to "Duplicate" a track in REAPER containing Rapture Pro. I duplicated it twice, so that there were 3 copies of the track total. And from that point forward, Rapture Pro has not properly restored a preset when I reload any session (not just that one).