Jaybird, you're quite talented with those... Perhaps you can consider creating one of the Midnight Sons. It can consist of Ghost Rider, Blade, Morbius, Dr. Strange, and later members Hellstorm, Jennifer Kale, and the Werewolf By Night if you wish to make it soon. (Not to be confused with the Marvel Knights.) If you'd rather wait a while (put it on hold), a few more will be added to that team...
Another one you can do is of the Asgardians. So far, I believe that Thor, Heimdall, Loki, Valkyrie, Odin, Enchantress, Sif, and Kurse were created. Though there was some rumors that Thor's long-lost sister from the tenth realm was also created somewhere, as was Odinson's love interest Jane Foster... Not sure where those rumors came from though.
Yet another one you can do is of the Spider-Verse or Web Warriors I think they call them. You can have Spider-Man, Spider-Girl (Anya Corazon), Agent Venom, Spider-Gwen, Silk, Scarlet Spider, Arachne, and Spider-Woman. In addition, Maegawa has made plans to create Miles Morales. Some to think about.