I'd personally feel compelled to bring six.

I'm sure a lot of people would. Sure, folks like to undersize stuff, but to me it feels wrong and give an option, I'd feel compelled to do it as the balance would be around six.

And bringing six now as it is would make a lot of the harder fights easy.

I honestly don't expect them to change it. I hope they don't, but if they do, meh.