Can I have more than 30 'regular' teams in exhibition?

The early mods before the Bobcats/Grizzlies/Raptors/etc have those teams just deleted or invisible or something.. I was wondering if there was a way to add teams to use in exhibition? Like 36 team rosters of 12 players or more that I could trade/release/sign with just for play now mode? I'm NOT wanting it for association or anything... Anyone know?

Shouldn't be a problem, that's what the Ultimate Base Roster does after all.

Shouldn't be a problem, that's what the Ultimate Base Roster does after all.

How would I go about adding teams to the '88 mod? Or any mod. Or not even a mod. Like I could create the Seattle Sonics and Charlotte Hornets and New Orleans Pelicans as new teams to the existing 30? No idea how to do it.

Should be more info on that in the Tutorials section.