Although I personally found it a bit tedious, I think that's just a matter of it not being my kind of game; I can appreciate the simplicity and "satisfying-ness" of the mechanics, and how well the tone is set.
Wow, this is pretty much my own thoughts about the game too honestly. Glad you liked the "juice," but yea I really wish I got around to the variations and incremental upgrades I had in my initial scoping.