The only thing I think that needs to happen is to maybe nerf incarnation burst and make it more spread damage somehow - so that pve is unaffected. If they're having trouble balancing symbiosis they damn well better give us a useful lvl 87 ability.
And if anything is changed we would need some sort of compensation in the dmg reduction department - esp vs casters.
I levelled this mage simply because it seems like they are never getting fixed. Somehow it appears to be their favoured class, no matter what way you look at it.