I really enjoyed BBQ's new game.
The only negative aspect besides the RPGM combat system is the night system.
in Nebel, you could see and stop/watch events at night, whereas in Priestess, You can only see events after they already happened (majority).
The quest log is really good so you always know what to do to progress the story. The maps aren't too big and you can avoid most combat mobs fairly easily.
There's still some bugs in the game right now, but the game is worth a purchase IMO. It's definitely one of the best NTR/Corruption games to come out this year. I think BBQ did very well.