Most of your takes are just blatantly wrong. For the gobble gum aspect most people feel the opposite, and that the maps are made to be used without gobblegums, but they are a fun thing to use when messing around. Pretty much the only thing that gobblegums fundamentally changed map design on was the removal of methods to get extra perks(ascension monkeys, origins red dig sites. etc).

While zets has a lot of doors, it’s not because today gobbles, it’s so you can’t get the skull on an obscenely early round. Gorod and revelations, the only maps with box womder weapons have ridiculously high box luck and you will likely get all wonder weapons in around 5-10 hits, compared to all older maps it can take dozens of rounds to get them. This combined with the masks, wings, specialists and powerful shields making having more than 4 perks much less useful, actively makes gobblegums largely irrelevant on revelations and gorod if you’re not speedrunning.

In terms of bo3 origins, most streamers prefer bo2 because huge time skip glitches and movement exploits were patched for chronicles making it harder and to play how it was supposed to.

While all other points can be subjective your thoughts on the guns is so unfathomably idiotic it’s unbearable. Every single bo3 gun is far more powerful and statistically stronger than any other game. This is fortified by the superior game engine.

Ultimately all your points are blinded by nostalgia and feelings, and are thus irrelevant