Been asked for in one form or another. Build up is now Inner Light and lasts longer, by the way. Plus, Light Form allows you to switch forms while active now - so you can get a "shield" while in form.
I'm not sure why you'd think the forms wouldn't be any good late game - or get to 16 and 'stop gaining powers." For one, Dwarf shows up at 20. 
Side note - you're looking solely from a PB perspective, and I do agree (and have said in my "Raising a Peacebringer" guide) that there's less interaction between the forms as opposed to a Warshade (see dual mire, eclipse, etc.) So what you're talking about isn't really "Kheldian" specific, but PB specific.
Hello
I play a Peacebringer and i love it, but i'm also getting very annoyed over the fact that most of the abilities force you to play a Human form.
I personaly love the Nova, and think it's cool to have a hero wich can shapeshift into unique forms.
But it can really be a bother to having to switch out of forms in the middle of combat to activate things like Hasten or Build up.
So my suggestion is to do a little Take N' Give on the khelds... I'm not quite sure what to take to make it balanced. But here is the idea i had in mind:
The Nova form currently gives +45% damage, wich i understand is a good reason to now allowing it to use Build up and Hasten, as it's damage output would skyrocket.
But how about lowering the Nova forms passive damage bonus to maybe 25-30%, to enable us to use hasten in form.
Also the lack of survivability you have in your nova form, for that problem i been thinking about maybe allowing a Shapeshiftet Kheld to activate 1, and only 1 shield at a time, while in a Form. This way playing a Kheld becomes a little more tactical, but none the less fun i would believe.
I hope you guys will like this suggestion.
And please don't flame me for making a suggestion to enable pool powers for khelds.
The way i look at it, thoes of us who wanna play a Shapeshifter Kheld, get to level 16 and then we could pretty much stop gaining powers. Cause none of the powers we get after that point have any effect on the Shapeshifting forms.
Some times it even feels like they just added the Shapeshifting forms to be a cool effect, but never really ment for them to be any good late game.
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