Why wouldn't Todd be returning? He voices the main character. I mean if you're worried about him being an LA actor that doesn't really factor into anything fro his role in Fairy Tail since he was living there during the recording for Season 1...Tyler wouldn't have casted him in the role if he wasn't sure he would fly out to record.
And it's not like the other actors aren't still around in FUNimation. Besides Season 2 mostly focuses on new characters anyway so that's a bit of a silly thing to worry about. Recasting is inevitable with such a large cast (Romeo's had a recast in the dub due to his actress moving) but I doubt the big roles will be going anywhere.
Well, i wasn't sure. I had found another fairytale season english dubbed, but it was from another company.