Bringing a nearly dead topic back to life, even if it is brief. First and foremost, the Scouts were going out anyway, and weren't replaced via UAS capabilities.
So how busy is the front seater going to be? UAS are point and click flying anyway. Second, most of the operators aren't FAC qualified and in fact, operations, payload and ordnance are controlled by different people, on some of them. Teaming Grey Eagles with the 64 allows many unique TTP's. Finally, you have trained gunners in the kill chain, that understand so much more than the operators sitting far away who probably aren't going to be able to be part of an Air Mission Brief, in person, with the AWTs. Ultimately this increases capability and reduces target latency, and latency is a huge issue with any engagement. It's all part of platform integration, and putting the UAS in the 64 crews hands is just another TTP (s) in the kit bag.
Besides, when Red Force figures out how to turn around UAS and put ordnance on Blue Force, the UAS days will be over for an unspecified period of time.