Can arcanes/divines get a new feat called "Summoner" or something?

It basically allows you to have 3 monsters summoned at once.

You can only have one monster of caster level.. let's say 5 or above.

Examples of what you can have:
1 Hezrou, 1 Efreeti, and 1 Dog.
Or.. 1 Hezrou and 2 Dogs.
Or.. as a lowbie you could have 3 Dogs.

Examples of what you cannot have:
3 Hezrou.
1 Hezrou, 2 Eftreeti.
2 Hezrou, 1 Dog.