Fun idea to make gw2 more fun combat wise

I know this will most likely never happen but I just want to share my idea since I thought it was interesting. Something that came to me as I was lying in bed about to go to sleep.

I am personally bored of using the same 5 sword skills over and over and I miss the variety of the gw1 builds that truly made the game a theorycrafting experience.

So what if we were to introduce the dual class spec back and do something like this:

http://imgur.com/YB5Cq

A warrior who does not want to use skills 3 and 4 on his greatsword can spec to warrior/elementalist and swap out those skills with the utility skills of an elementalist. A warrior could summon a lesser fire elementalist for example. It would probably be hard to balance but would make things so much more interesting combat/build crafting wise.

Anyone think this is a good idea?