You know, I like watching new players trying FFXIV for the first time on youtube, I like to see their reactions and stuff. But one think I also notice is that a lot of them complain about how easy the earlier fights are, and they are indeed braindead easy. The orange juices take too long and are not punishing enough, you can literally stand inside them and nothing will happen. The bosses die too quickly and are not interesting at all, there are no mechanics and you don't learn nothing with them. There are no non-optional challening dungeons in ARR (yes, all the somewhat challenging ones are optional, which explains why new players struggle a lot in them). You know where the first stack mechanic happens? In fucking Praetorium. The first proximity? Titan (it doesn't even kill you). The first spread? Ultima. Wtf? These are mechanics trash mobs should use imo (but that's a discussion for another thread), you should definitelly see them way earlier and way more frequent.
How would be my approach to solve this issue: you know that slime that is a midboss in Copperbell Mines? You know the tiny slimes that it shoots that explodes? Yeah, make the telegraphs be a second long. And make them take half of your life and give you vul stacks. Yeah, you will be hit in the first time but you won't want to be hit in the second time. Make the players see what's going on in the screen and solve their own problems. The fire boss in Halatali? Make that be an actual dps check. You just have two or three dps buttons at that level! Press the buttons! The divebombs of the last boss of Stone Vigil, make them way quicker! I always fall asleep in that boss! And please add more of the fundamental mechanics such as stacks, spreads and proximities throughout the earlier dungeons, you should not have to wait 50 levels to start to learn about them.