Call me a purist but...
Can rangers get a similar animal companion? (and druids too when they come out)
And paladins can have their mounts?
And how about familiars?
Well okay, mounts might provide a problem (mounted combat? squished areas? maybe only for explorer areas?)
and familiars can just float around like ioun stones (lol) or they just sit on your shoulder or something...
Okay maybe a little difficult to implement but I would LOVE to see something like this in the future...