Yes, I do feel, even as a fan a mega Carcassonne game can get tedious rather fast. Some of the expansions I do agree one should use less of, like the Bazaar.
Also, the most common tiles, if you got 16 of them for example, can reduce that amount to 4.
The biggest flaw in my opinion is when playing a grand game is you have too many options that it, in itself, dissipate the challenge of contemplating your next move. With only the base game, you could plan ahead knowing there's only one 4-city tile etc.