First off, before I say this, I want to make it clear that I was a crafter in SWG and took great pains to make sure I was near the best crafter. I love crafting.
HOWEVER I would not want it as a class. With only 4 per side, having a crafter CLASS would be an insane waste. I'd rather it be a talent/selected pool/whatever so that I don't have to log out of my main to make whatever shiney someone needs. It seems something that would be best left to selectable rather than as a class.
I agree that it would be nice if Bioware were to go a different route than a healer class. The question becomes... "But what?"
"I would rather be exposed to the inconveniences attending too much liberty than to those attending too small a degree of it." Thomas Jefferson