Prestige classes bring one addition to your classes, it doesn't feel like a specialization. Multiclass doesn't seem to work.
Instead of Prestige classes, you have class specializations, which appear at level 3 for most classes (level 2 for Wizards, level 1 for Clerics).
Multiclass is planned, but not implemented yet.
The combat system of 1 action per turn is outrageously boring. What happened to the # of attack per turns as per DND? ie: Fighter.
Extra attacks start at Fighter 5, and similarly for other classes.
All stats should be good for all classes.
That is not how it works in 5e.
I'm sad, currently, this game isn't worth my investment, and if it continues on this line even at release the game will be a dumb down version of Divinity and nothing to do with DND.
That's wrong, you are ignorant of the way D&D 5e works, and most of your complaints are actually "D&D 5e is not the same as D&D 3.5e".
This game first, doesnt explain shit about the future of your class or prestige class, therefore you are completely blind in regards to the development.
That is a flaw which needs to be improved, yes.
Like I said in another post, Why can't I make a fighter focused on archery, with feats every level, like many shots, etc.. why feats are soo trivial now and doesnt bring real content to your character.
You can make a fighter based on Archery by PnP rules, and it was considered by many better than the Ranger class, in part because you got more extra attacks than the Ranger does. The Ranger class in BG 3 is changed. There is a Ranger spell similar to Multishot, but I think it's too high level for EA considering Rangers are only a 1/3 caster. The rest of your complaints are "THIS ISN'T 3.5e". Of course it fucking isn't. That was two editions ago.