Good and honest review. I personally have no problem with the "cheesy one-liners and familiar phrases", I do however not like the background music in game. It's a bit boring. You can barely hear it and units smashing, tower bashing is to loud compare to the background music.
As far as replay value goes it really depends on the games. After a 1 hours game you will most likely feel tired and stop playing, while some just keep going till they drop. The game is rather simplistic at the moment, but with constant update, downloadable content or expansion pack and excitement tournaments and such, I think this will last for a very long time.
Congratulation your first "Great" review given to Demigod 