Wyll's voice actor didn't change, did he? He just doesn't put on as much of an accent.
Honestly of all the things I'd like to see from the theoretical 'cut-content' mod that comes in the future, finding out what the original story for Wyll and Mizora was to be is the most interesting. It'll be this games, Haer'Dalis
Look up Lanre Malaolu, lack of connection players made to Wyll during beta maybe was one of the reasons the character underwent a whole fundamental change which brough Theo Solomon onto the table for Wyll.
I know it will never happen at this point but the content that never made for various reasons whether it was lack of technology or a more coherent design concept, I would have loved to see pretty much anything around Minthara that did not make it into the game, if there were anything that didn't make it to begin with, just feels like there is nothing to it other than the pregnancy thing I can think of right now.