It's cool that there's someone who likes it. I just don't see that. Especially the "internal battle" stuff; it's been a few months since I finished the show but I can't think of a single example of that. Unless you mean the conscience circuit stuff? But IMO that would be a bad example as it's only a factor when the external influence of the bad guys' McGuffin is used (see also Akumaizer 3, where it was a magic glowing rock instead of a magic flute).
I am referring to the conscience circuit. Kikaider, a tool built for good, could at any time be immediately used for evil and it's only his sheer willpower that keeps him from totally giving in. But I'm also referring to Hakaider's brilliant character arc (which was absolutely ruined by 01), which I don't want to go into too much detail about since I want the OP to experience it when he gets there.