We all know Ascendance is a ludicrously out of date model that bears almost no relevance to shamanism at all at this point, looking more like a color-coded Skeletor than the pinnacle of shamanistic alignment, and that updating or replacing it has been an overwhelming desire from the shaman community for ages now.
My suggestion is instead of creating a new form, take a page from the Kurog Grimtotem encounter in Vault of the Incarnates: create a new set of armor – or repurpose an existing one, like a tier set – and give it element-coded recolors for each spec. Entering Ascendance then swaps out our current armor for this set and makes us a bit bigger and glowier with an appropriate elemental aura.
This surely must be less effort than making new full transformations, and lets us still feel like our character even in this form.
As long as Ascendance remains in its current form, I am actually despairing over what I’m going to play as Enhancement in TWW, between Stormbringer forcing that talent leaf, and Totemic being an incoherent mess that was obviously designed for Resto alone and then had Enhancement stapled onto it after the fact.