Things I've learned playing Orisa:
1. You can place both her ult and her shield on a payload so it moves with the group.
2. You can fire her graviton ball without pausing your primary fire. This is good to pull a clump of people together if your aim is bad like mine on console
3. Her bullets are a bit slow and don't hurt quite enough individually to really deal with Pharah solo on console (at least not for me).
4. Small spread means dealing with Symmetra turrets can be a pain.
5. People don't recognize her as an anchor tank yet, so you can't really herd cats in solo queue with her like you can with Rein or even Winston.
6. Graviton will shift a turret version of Bastion
7. May have been my aim (depth perception), but I didn't have much luck in the few instances I tried pulling people off ledges
8. Graviton is nice to shift a Pharah off course though if you can get that down.