I think you just touched on something that's been bugging me a lot with recent shows. Back then they had completely different set of voice actors. Today it's like I hear the same voice actor everywhere. The voice gives the character more personality than a design and outfit ever could. A really unique costume, hairstyle, or art style does nothing if the voice is johnny yong bosch who has done voices for just about every series.
Seriously, I'm playing a psp game call Mimana where the main character is suppose to be a gambling deadbeat. And johnny yong bosch plays his voice. Naturally the game gets high praise for it's voice acting. He might be a good voice actor but he sounds so generic at this point. He's always the voice of the tough "cool" character. Vash the stamped, Ichigo in bleach, Kiba in Wolf's Rain, Lelouch in Code Geass, Nero in Devil May Cry...just look him up on IMDB and they don't even have everything listed. I swear cartoon network doesn't run an anime series unless bosch voices a main character. Fuck toonami, they such just call it the bosch block. It might have been a coincidence back in 2009 for 2 back-to-back shows to have him as the main character. But now it's just stupid.