It's a whole different ballgame to make an RPG than to make a casual game. If a game like Gothic is all you want in an RPG, fine. I don't think that Unity will fail to deliver. However if you think fallout 1+2, Jagged Alliance, Silent Storm, XCom, or typical turn based games it's another story. And if it's not something like that delivered I'm gonna rage and so will half the codex, all the real RPG fans.
What exactly do you think makes an RPG complex? RPG games are complex because there is so much content you need/want to create/handle. Their complexity stems from handling quest trees, randomly generated items and mainly balancing.
Coding stats, battle alogrithms, UIs and such is not really complex. The game design decisions tied to these systems are far more difficult to nail down.
Compared to other games, RPGs have simplified AI and slower pacing, which are both great advantages. An AI in an RPG doesn't traverse an island or deal with a physically based world (physics inluded).
CryEngine is a state of the art engine, not because it can handle realistic graphics, but because it can do that while handling high quality physics and AI that is pretty smart (enemies sneak up on you, find alternate roots, hide, work in teams - this in real-time).
To do this in real-time is an achievement, making quests and items isn't as hard as far as tech goes, it can be more time consuming though.
And nothing you say makes me think you are anything but a marketing plant since I've had almost exact same "discussions" with them before.
Yeah, he's laying it on pretty thick, right now.
Oh, are you a game developer? Did I offend your favorite engine? Do you think I want you to buy Unity? Yes, please buy it! Give them all the monies. They are waiting for all the Codex to buy their engine, since you are all obviously game developers, they sent me here "under cover" to lead you to the dark side of FREE game engines... Wait maybe I'm working for Fargo and I'm trying to sway the "Most Important Internet Forum" in his favor about his latest decision.
Compared to Drocon who is promoting the C4 engine and actually has the audacity to say that this "list:
http://www.terathon.com/c4engine/shots.php
compares to this list:
http://unity3d.com/gallery/made-with-unity/game-list
which isn't even complete....
Look you can think what you want (obviously), but a guy over at Unity forums pointed out the ridiculous claims made here by Drocon, I had some free time and proved him wrong. I don't expect to win teh internets, but such obvious lies like "Unity is not OOP", "Unity is unresponsive", "Unity only has scripting" etc are screaming for some swift "internet justice".
Just look at the lists, you don't even have to open each link in them. You can see from the thumbnails what crap is considered quality PC games by Drocon and what he calls casual shit for mobiles. If this is what we are comparing, then sorry but Drocon:
YOU LOSE!