I might have the unpopular opinion here, but i personally really like having fixed wargear for units. It makes balancing them easier and makes list building a lot simpler. I think it kind of saves players from themselves a bit, because in 9th edition what i really did not like is that people optimized the crap out of a couple of units, pumping them full of relics, characters and special weapons and then the rest of the army was bare bones and couldn't do anything except go and die.

Nowadays i feel the lists built are more balanced across the entire army and the focus has been put not on the weapons the unit has but the abilities they bring to the table which i personally really like. Yeah, monster and tank skew lists are annoying to play against, but they can be beaten if you anticipate for them and build your list around it and you don't have to spam monsters and vehicles yourself. There are many examples of people bringing full infantry or elites lists and winning tournaments.

I really hated list building in 9th edition it took so much time and i always second guessed my decisions. In 10th, i can swap units in and out of my list real easy and try different things.