The Concierge said:
The idea to introduce a more sinister side to the Jedi Order also appealed to me... Something to suggest the decadence in their organization and their stubborn adherence to outdated orthodoxy...maybe'd give a bit more credence to Anakin's betrayal.
Agree, we often try to make Anakin darker here and it's good, but the thing to do is to make the Jedi less likeable so we can connect with Anakin.
At a point (maybe when they watch the hologram of Vader and Sidious) Yoda and Obi needs a scene where they understand that what happens to Anakin is as much their fault than Palpatine's. And all their actions in the following scenes and movies will be to redeem themselve.
Well I think that is already pretty much what Lucas had in mind, it's just not very well done actualy.