... don't resummon that often? And if you're dead and your team has moved on, there are bigger problems than resummoning a pet. (Besides, if you're dead, your other pets are not taking damage - they die when you do. There may be an exception - I don't recall if Necro's ghost hangs around or not - but your T1, T2, and T3 pets die.)
And to test - fired up a MM. Took 9 seconds from no pets to all pets - you don't have to wait for the animation to finish, after all. To buff? ~4 seconds. (Again, you don't have to wait for the animation to finish before hitting the next buff and starting to move.)
So here's what you do:
- Other than low levels, don't worry about your T1s. Past... oh, 20, they're cannon fodder anyway. Don't resummon T1s every time one dies. The only time to worry about one dying is with Necro, and that's just to summon the ghost.
- Worried about not keeping up with the team? Stay with them. Keep them buffed. Summon and buff your pets as you go.
- Don't wait for animation times to finish. You don't need to.