I am overall not a fan of A24. I like a lot of the balancing changes, but the game overall isn't as enjoyable.
Things I don't like
The game moves much, much slower. Part of this is because unit production is way slower. Part of this is because units actually move slower. I do not see the need for either of these and both make gameplay considerably longer.
Because of slower unit movements, defensive buildings are much, much stronger. This makes fighting under any defensive buildings unsustainable for more than a few seconds. As a result, turtling is encouraged and fighting is discouraged. This is inherently less fun and more simcity.
Because turtling is encouraged, it seems like every tg ends in massive siege spam. Sitting back and passively spamming siege to destroy buildings isn't much fun.
Civs are too similar now. They all seem interchangeable with the only differences being that some civs are more limited. What is the difference between ptol and rome/gauls/brits besides ptol having many more types of units and buildings? What can mace do that rome can't? It was more fun when there were things like celt building pop bonuses, free ptol houses, and easy spam siege for mace.
There are other smaller changes that I don't like. For example, eliminating outposts vision is very frustrating in TGs where it is easy to sneak attack someone. This is made especially frustrating by the fact that capture rates were buffed. Also, I don't like how stone upgrades now cost wood. Before you would do eco tradeoffs between when balancing food/wood. Now, all eco upgrades rely on wood and metal.
Things I like
Overall, soldiers are much better balanced. For example, I like that archer civs are no longer useless. And, I like that champs are integrated more. Both of these were overdue and I welcome the changes.
We eliminated dancing. This has introduced some weird animations but overall it is a huge upgrade.
There are some other smaller changes that I like. For example, I like how military upgrades now work.