Souichiro Hoshi, isn't that bad, IMO. Just don't make the him cry. I mean, after hearing Kira Yamato crying in SEED... God that was the most horrible crying I've ever heard.
I do agree that the others stand out better than him. Satsuki Yukino and Mai Nakahara owns.
Simply put it, I have no problems with the VA selection. Just make the animation better...