For the most part, I do love Komoe-sensei, Index, and Touma's Japanese voice acting, but it would be nice if Rie Kugimiya voiced Misaka.
As I person who prefers dubs over subs, I was thinking of Monica Rial voicing Index (across from Minamo from Azumanga Daioh, I still need to find more voice acting samples). But I definitely know who should voice Accelerator and Komoe sensei.
For Accelerator:
Apparently, this voice actor would be my second choice for Touma if James Arnold Taylor can't voice Touma. My second choice for Accelerator would be Spike Spencer.
For Komoe-sensei:
Spoiler for Azumanga Daioh:
Look no further to the English voice actress of
Chiyo-chan.
After several discussion in Anime News Network, I admit that my ideas may be legally impossible. But I do strongly feel this anime should get an English dub (although I do find the Japanese voice acting to be good, but not as great as Lucky Star).