There are some low hanging fruit that Richt has ignored in his offense: pre-snap motion, stack/bunch alignments, heavy personnel groupings, among others. These are methods that can confuse a defense and scheme guys open.
But the talent level on offense has been lousy by Miami standards and it's a group that struggles to execute even simple plays. Rosier is totally inaccurate, Kaaya had major pocket issues, Walton had vision issues, Richards is a raw route runner and the OL can only overachieve so much with so little talent.
Richt hasn't maximized his personnel but he hasn't totally held back the offense either. He typically adjusts between games with stuff like the RPO, midline read, and specific runs. When he spots a weakness he attacks it repeatedly.
I expect some new wrinkles this year but I'll wait until this elite offensive recruiting class is in year 2/3 to bring the full judgment to bear.