I actually enjoyed MU Legend though, and it isn't even intended to be a sequel of the classic MU but a prequel, based from the game sending you decades before the start of Kundun's malevolence, and it is also stated from the devs that the game is a prequel of the old MU.
And as for the graphic setup of the game, Yes it is true that it really is pretty much based from D3 setup as I assumed, but honestly it doesn't really affect me as a player, mainly because, if you noticed most of the MMORPG right now, even games that are not set to make players view your characters above, like Tera has exactly the same setup of the UI and even right now, Lineage Eternal even has a similar UI setup.
So I'm assuming that these conclusions of sticking with the exact same UI design, is because we're used to it and it is pretty much very suitable for the MMORPG look. Because I tried playing other games looking different with their UI, such as Archeage and that game that is based on Gods, they were very terrible and the UIs were confusing and annoying to look at from my own perspective of getting used to the classic orb pots or bars on the middle and active skill slots on the sides.
But I do understand, different people has different opinions and expectation to how they would imagine the game to look like, but for my own preference the game is perfectly fine.
But honestly, the only thing what ruined MU Legend for me is that, the plot itself has a lot of plot holes and the game is pretty much half-assed written. I expected at least a better reason behind why there are other races and why Dark Lords still exist in the prequel.
That was the discouraging part of the game, but do I think it is really terrible throughout the whole concept of the game? I think no, I still believe it still has potentials to grow, I was happy seeing the Tibbeton make out as a mount in the game though, it really felt good to see it made into a Unreal Engine 3 model.