Maul's arrival on Tatooine is unnecessary. He could appear first when he duels Qui-Gon on Tatooine. I don't think not knowing exactly what's going on prevents enjoying the ride. It's a tried and tested narrative device to enter storylines as late as possible while not creating too much confusion. After all, there's no scene in ANH where Tarkin tells Vader to take a star destroyer and capture the blockade runner.

I tend to agree with Mask about Maul = Grievous creating more problems than it solves. But if InfoDroid wants to cut MTH's scene as a test, I'm prepared to be convinced.