Originally Posted by
fiddlesticks
For every class there are one or two builds that are clearly superior to the rest, either because of their high damage potential or because of their survivability. Glaive Throw for Outlanders, Prismatic Bolt for Embermages, anything involving Forcefield for Engineers, etc. It's not really a problem on Normal, since the game is easy enough that you can complete it with just about any build, but it is very noticeable on Elite. Going through the highest difficulty with a physical based Outlander is a huge pain and really not worth the effort.
I hope Runic will do some additional balancing to make some of the weaker skills more powerful. I'm not too worried though, because even if they won't, the community will create a rebalance mod themselves somewhere down the line.