Quoting CdrRogdan, reply 1
This actually isn't true. The champion may be missing traits but they tend to have higher stats. Given that the majority of traits raise stats I don't really see an issue with this.
True for warriors maybe, but mage characters are all about the traits. Whats a mage without evoker or spells? Your pretty much never going to get enough levels on a high lv champion to get them even lv4 in a spell trait and the low level ones mostly only have a single spell trait. Some rare lv3/5 champions do have 2/3 spell traits but they shouldn't be the only champions with a chance to be powerful casters.
I agree this is a problem now, where there are really only two really valuable champion types...an optimized mage, and a path of the warrior, both with logical traits. I dont find mid-late game champions nearly as valuable as the early game champions I control the level bonus selection of, and rarely buy them except for kicks. Their superior equipment is nice, but nothing compared to having the right traits.
It's the dev's stated intention to change this though, and make the other paths distinctive and valuable. Of course, Champions will have to be created along more deliberate lines, and not completely random, otherwise you'd still get a lot of pointless champions.