IMO, given that it appears there was quite of bit of premeditation and planning involved by the conspirators (head shaving, repairing Mercier bicycle to return it to good functional condition, creation of and photocopying of alibi script, set up of alibi phone call and supposed KM morning meeting, purchase of clear plastic ponchos, insistence that PG work away from the Farmington area for the day, use of PG's vehicle instead of FD's own, among many other acts), it seems to me that if FD and the conspirator's intent was to emulate an abduction, FD would have planned better and taken JFd's purse along, leaving it or at least some of its contents not far from her car to indicate she'd been abducted and robbed. And if FD wanted it to appear that she'd been abducted for purposes of sexual assault, FD would have disabled JFd's phone immediately after removing her from the car, rather than nearly 40 minutes after arriving at Lapham Rd.
I suspect the reason the phone was not disabled immediately, but was instead left activated until FD was ready to depart for his own neck of the woods is because FD wanted to be aware if anyone tried to contact JFd while he was completing the transfer of evidence from the Suburban to the Toyota Tacoma, so he'd know if the search for her might already be beginning. FD seemed aware enough of JFd's planned schedule that day to lie in wait to surprise her immediately after she dropped the children off at school and then to clean up and leave the scene before 10:30, when someone else who knew her schedule might start checking around to see why she wasn't where she had planned to be. As FD completed the transfer from JFd's Suburban to the Toyota Tacoma, he likely knew he was now in a time (after 10:30 am) when alarms could be raising about JFd's whereabouts and that caused him some measure of anxiety.
IMO, the running lights being left on and the Suburban's transmission being left in "Reverse" were signs of panic due to fear of discovery. I think FD pulled the Suburban alongside or behind the Toyota Tacoma to transfer the bagged-up and zip-tied body, garbage bags full of bloody evidence of cleanup, the cargo liner from the Suburban, and the bicycle and then he wanted to get out of there as quickly after that multi-step transfer as possible, so he pulled the Suburban up into the place where it was ultimately found, forgot to put it in "Park," jumped out, and quickly ran to the Toyota Tacoma and took off. My guess is that he didn't even disable JFd's phone in that spot, but pulled somewhere else nearby to do it as he didn't want to be proximate to the Suburban while he did that extra step which would from that point on leave him unaware if anyone was trying to contact JFd by phone.
IMO, the conspirators chose Albany Ave as the area to dump the garbage bags because they knew there were plenty of individual trash receptacles in a close area, they knew that a lot of shady stuff goes on in the area without raising unusual suspicion, and they suspected that - even if one or two of the bags were opened, the person digging through the trash to find something of value wouldn't concern himself or herself with discovery of signs of criminality. IMO they did not put the bags there to throw suspicion upon others; I think they just thought the bags so far removed from the home JFd disappeared from would simply blend into the background in that area until they were picked up by the waste management truck.
IMO, I think it significant that the altered license plates weren't similarly treated, which leads me to suspect that they were boxed up and placed in the storm drain for someone else to retrieve them for some intended use.
