I can only speak as the the West End of Curacao, but as Joyce said it the west end and east end are entirely different.
So, one week on each would reduce your sameness.
The basic topography on the West End is a gently sloping wall/reef. However, there were a lot of differences underwater. Sometimes a reef, sometimes soft corals, sometime hard corals, sometimes sand, sometimes a drift dive, sometimes not.
I will say that in over two weeks of diving on the West End, I never got bored over the scenery. I felt there was a lot of variety.
Plus, I am looking at the fish and little critters, not the scenery anyway.
I don't think your concern will be an issue.
I have no experience with the East End, but I will say the diving on the West End is very good and I think you will enjoy it.
I hear great things about the Dive Bus on the East End.
Finally, please count my vote for West End diving with Ocean Encounters West. Great staff.