Now I've got my own list of 4E pro-and-con points, but the one that drives me the most bonkers is what is famously referred to as the "disassociated mechanics." A lot of 4E stuff seems like random bags of powers designed to fill some game design function, with the story convoluted around to make sense of it, which for me is bass-akwards. Even in HERO System, the King of Disassociated Mechanics Rulesets, the powers are supposed to simulate what story-wise the character is intended to be doing.
Anyway, buried deep in the discussion, there was a recommendation of 13th Age as being a game system that has a lot of the same strengths as 4E but was simpler and faster. I decided to check it out, downloading a sample PDF, and found a batch of orcs which had an attack that did weapon damage, and then on a crit, added +[x] psychic damage.
I just blinked, and tried to parse it. I didn't see anything suggesting these were somehow magical orcs (although I was skimming, so I might have missed it). As far as I could tell, it was just randomly stuck on.
Later on I found references to the Essentials line Monster Vault series as being better than the core Monster Manuals, so I scrounged up a copy of one of those to look at (Threats of Nentir Vale, I think it was), and happened upon a wight whose attack did "[x] damage, and the wight turns invisible."
Again, just sorta, "Why?" I mean, there's no reason for wights not to turn invisible, I suppose, but that's the sort of behavior I'd expect from spooks rather than the walking dead.
Now 5E has a little bit of the opposite problem: most of the 5E critters have movement, and an attack (or bunch of attacks), and little else. I discussed this in detail on an ENWorld thread using the hippogriff as an example. The 4E hippogriff has an interesting "land on somebody and knock them down" ability on top of their regular attack, while the 5E hippogriff just does damage. (Plus, more than half the 5E Monster Manual entries are CR 2 or lower, which even with bounded accuracy is still a bizarre distribution.)
I've been threading this particular needle by doing a fair amount of monster customizing. I have the 4E Monster Manual and Monster Manual 2 on the same shelf with my 5E books to fish for ideas when I want to punch up a dull 5E critter.
But I'm still not going to have randomly-psychic orcs. ¬.¬