I would like to see more good, original LEGO themes. Really the only themes I have seen in recent years that have been original and good are Chima and Ninjago. Galaxy Squad was pretty good but there was no story
whatsoever and the aliens were just strange.
It seems that most themes these days are just made off of popular movies and franchises; though I am excited for the LEGO Minecraft sets.
I currently cannot think of any ideas, but when I do I'll be sure to post them. =D Nice topic BTW.