This game needs a branching storylines. Like options in dialog that would allow different quests or outcomes in the storyline / game world. It is too linear.
Saweeet Game! I can see tremendous potential for this Genera. Things I would would be EPIC in a sequel: ~Endless mode~ (think sandbox options like Tower defense pro) ~more weapons and abilities~ ~walls and/or other immovable units~ ~BIGGER!~ (A zoom function so that the maps could be tremendous would be Uber epic!) Expand on this concept please! Movable TD could become the next evolution in online Strategy! 5/5!
Plenty of ideas :) ... Considering to do a sequel sometime.