I see you've enjoyed my puzzle-y missions (thanks for the support!), so I can tell you my biggest influences are: Haplo, Eshaktaar, Nameless Voice and Nicked.
I gather you're already familiar with Eshaktaar, Nameless Voice and Nicked, but check out Haplo's missions! He's done some very innovative puzzle-y stuff. Among two storms is an especially unique experience, but his whole sinister awakening collection is quite good if you like puzzles (UVI, IC, OTSA, ASF).
Also excellent: Sepulchr...