Because as it stands, you just give up so much and get so little in return. Sure, the effects are kinda nice, but they aren’t worth the time it takes to execute them. Why would I bother overloading Water when I can dramatically out-heal it by dodging around and popping Water skills? Why overload Fire or Air when I’d get more damage with standard rotations?
But rather than just straight buffing overloads, why not take them one step further? Why not amp up the effects significantly, even ludicrously, but then lock the Ele out of that attunement entirely (as well as any other overloads) for the entire extended swap cooldown? Make using an Overload more than worth the time cost and risk associated with channeling for such a long time, and then pay for those huge numbers by losing some versatility for 17 seconds.
I main Ele and Necro, though I have an alt of each profession at level 80.
How to Condi Reaper on a budget
Everything I say is only in reference to PvE and WvW.