No you can fill out as many points as you want in the heroic feats. I just enlightened which only allows me to put as many points into it as I did when I first enlightened. I've seen people with maxed out heroic trees.
When I respeced, it allows me to put as many points in heroic feats as I put in to it previously. When I reach a certain threshold it locks the rest of the feats out and only allows me to put them in paragon. I believe the system is called enlightening, when you go to the paragon tree. I need defensive skills as a Guardian…
I spent all my diamonds to respec then found out that I can't get my heroic feats back which makes respecing useless for my great weapons fighter. I need those defensive feats or this character is useless. Nowhere did I see that I could no longer get my heroic feats, and in fact respecing was incredibly vague. I was about…