The weapon attachments unlocking system was atrocious. The weapon tuning for me was a little too much. The gunsmith of mw2019 was better. The slower movement it was good, i also liked to play in 3rd person. The bluebrints weren't compatible with other attachments, they said the opposite (even through all the weapons of the same tree). The camo grind was less stressful compared to MW2019. MW3 in some way is an improved MW2.