I think the only escort missions that were okay were the hacker ones at the missile bases. The initial driving part was at least semi interesting because you had to evade your pursuers although it sometimes was annoying, and the defense part at the end wasn't too bad. The Army of Chaos actually showed up for once to shoot shit, which is rare for them. Seriously, I like messing around with AI allies in games and in JC4 the AoC never show up and are extremely incompetent.
JC3's system didn't make since when it came to bases, (why would you blow up fuel tanks instead of just taking the base and using the fuel?) but it did make sense when it came to towns since you were destroying propaganda machines and destroying the local garrison. I would have liked if you did "base raid" missions to take the local stronghold and JC3 liberation for towns and small outposts.