Thanks for the feedback. And you don't have to feel mean just because you have constructive criticism. Especially since you approached it from the angle of "It would be better if..." instead of "this game sucks because....".
I'm glad you liked it. And I agree with much of your feedback as do a lot of the people who have played the game. If I were to flesh the game out a bit more, it would lean towards working away from clicking and more about managing defenses.