Fouss is great, but his versatility is pretty poor. Thankfully, we got some guys who'll make him work as an undersized 5
I think running Mag at the 3 will probably make him work better than anyone else on roster (yes, even without the extra shooter). Being able to run a 6'9 Demin in the backcourt & a long athletic 4 like Catchings (& probably a bit of Keba at the 4, too) will all help in making Fouss work better at the 5.
He's gonna get longer, more athletic helpers on D this year, & will be harder to double down on — on O.