It was as boring and bland as you'd fear a Lelouchless Geass could be. If anything it was too similar to Geass, they tried to replicate the same themes and conflicts in Europe that were in Japan, making the setting change pretty much irrelevant. The CG mechs were fine, well other than the choreography that turned them into acrobats on roller-skates.
I really don't see the choreography in
Akito as a negative. It's basically a retroactive change they applied to all the
Code Geass mecha, both old and new, in order to take full advantage of the use of 3DCG. In that general sense, this isn't too different from the sort of things
Gundam has done with its extra stories set in or around the One Year War, where the robots don't always look or move exactly like they did in the original
MSG.
As for the rest, I think the first episode was fine as a prologue/introduction. I don't see why people would expect to get exactly the same experience from a spin-off, so the lack of Lelouch isn't a big concern. I'd also question the claim that the setting change was "irrelevant" even if one theme in particular (the Japanese being mistreated) is still present. There's enough differences elsewhere.