The impression I got was that Maeve was supposed to occupy the main center while Ford executed his hostile takeover plan. That and repair Arnold, I guess. I think he deliberately gave her the choice to escape or come back for her daughter as a sort of final test of free will. Every moment prior to that was completely planned by Ford, up until he had Delores shoot him. Given Ford's scenes with the Asian tech early on where he is berating the guy for showing empathy towards a host, I think he was specifically selected by Ford for Maeve to influence. Not the best part of the show, but not as bad as it was made out to be, either. The robots were clearly stronger, tougher, and faster than humans when they wanted to be (post credit scene with snake girl more or less confirms this) so normal humans who were not used to the robots attacking them WOULD get ganked like bond henchmen. I am guessing Delos likely had a military/infiltration interest in the robot tech and viewed the park as simply a demo training ground for that purpose, but that's pure speculation at this point. My gut feeling was Maeve was actually given the choice to either escape with the plans to build more murderbots for the robot revolution, or return to the park and find her "daughter". We wont know until a hypothetical second season who got out of the massacre alive and what became of those plans, though.
The overall Ford plot was solid, imo. He had all the scenes with his robo family and the dog where he was clearly working things out. It seemed to me that he was tired of the games with the board and wanted to make sure his creations would be free after he was gone. That and he had a very low opinion of humanity and clearly a very close friendship with Arnold, given all the homages he paid to him in the park and his actions (using his credentials to do the under the table stuff, ect) as well as his fondness for Bernard. He is basically the deus machina in the entire series and his plans are literally the only ones that were successful and had agency to them. Honestly, if I were planning to start Terminator IRL, I would act like someone vehemently against freedom for the hosts, too.
There were three things that bothered me about the series. The main one is that they never explained what precisely happened to Ellie and the security chief guy. My guess is that Ford likely arranged for them to be kept out of the way so they would not get ganked in the revolt. Would have been nice to have some indication of their fate, but I am guessing the writers left it open to decide later. The lesser issue for me, was the Wyatt back story and whether or not Delores essentially stopped being Delores and is now Wyatt, but again they probably left that open on purpose.
I agree that I almost prefer that they not do another season because this was about perfect for a story, as it is.