Why are summoners so neglected?

[Synrin]

I was thinking since Tri-disaster and Contagion are on the same cooldown, they could even combine it into one effect and give Garuda a new 4th ability or something.

Although that would leave Miasma II out of the contagion mix.... hmm... Though I do think that may be one of the abilities on the chopping block come the expansion.

Or maybe make it a skill summoners themselves have? I mean, Garuda isn't the only summon either...