I like these ideas, but still, they'd have to fix many of the pet's problems as of now to make this work... If the potency is so much more dependent on egis, they'd have to function 100% correctly or our dps loss would be huge.

Also, I think I'd like it more if there was a choice between for example:
>Trancing to Ifrit (best single target dps)
>Trancing to Garuda (best aoe dps)
>Trancing to Titan (maybe buff the party and debuff mobs? that or get rid of it completely)

And then having a choice between:
>Trancing to Bahamut (best single target dps)
>Tracing to Phoenix (best aoe dps)

So on a boss fight you would be trancing to Ifrit->Bahamut normally and to Garuda->Phoenix for ad phases. Maybe to Titan too depending on how they implement it.

But these are all just ideas, in the end what they'll most probably do it just increase some potencies, see people are happy with higher numbers and call it a day.