This is going to be a big reply to many things
They are not trackless. The guns are on rails.
Uhh wrong, please see above as the guns are on rails, and are not considered ride vehicle in the RCS. In the RCS the gun are treated like the doors you see moving when you go from scene to scene.
It's not about getting confused in about the guns faulting. The reason gun 1 works all the time is that is has different, and less movement than guns 2 and 3.
Only in WDW, if they tried to do what is called the ITS Bypass in DL now, the CMs would literally would refuse to do it.
The amount of money it would take to convert Rise to the OT would be insane. First you'd need to replace ALL the media, then you'd need to redo the X-wing, all the stormtrooper, the AT-ATs, the Tie fighter, all the AAs, all the FO costumes, and some of the Resistance costume pieces.
First of all Resistance outfits, not Rebel. It's 2 main things. From an operational stand point Resistance needs have control of load, and you're not going to have the CMs changing every time they rotate positions (tho that was the plan at one point with Stormtrooper Armor). Secondly a lot of guest are REALLY stupid, so they thought/knew most guest would be confused if when the door opened you saw someone in a FO costume breaking you out. That why the CMs say "we're with the Resistance" when they come into the cell.