I'm playing in a group of three in a gestalt game with In the Company of Dragons and the Dracomancer. My teammates picked a Human Wizard/Cleric and a Halfling Rogue/Alchemist, but I went with a Taninim Draconic Exemplar/Dracomancer because I wanted to play a dragon mentoring another dragon, and I'm planning on getting Leadership later to recruit a second dragon to mentor. How would this affect the campaign?
Thematically it seems appropriate, but Leadership in a gestalt campaign seems like it could get out of hand pretty fast... especially with two dragons.
If your GM is amping up the campaign to match the level of gameplay to the power of the party, go for it. But that is who you should be asking.
I totally get that.
I have even shied away from TWF because of the time per turn. Summoners and animal companions and cohorts, disgusting amount of time to make the other people at the table wait for you.
I think cohorts/summons/animal companions are a complete $#!+ show, and I avoid all of it like the plague. But that's just me. They are part of this game, someone might as well get some use out of them. It won't ever be me.
On second thought, I won't get Leadership. It's more work to get my Leadership score high enough to recruit dragon cohorts than it's worth.
Looking at my classes, I will become Large during the mid-game and will eventually reach Colossal size.