I recently watched almost all of I Love Lucy (still have a few of the comedy hours left), but haven't been in a rush to see any of Lucy's subsequent television shows. Everything I've read about them has been less than kind, even when it comes to The Lucy Show (the immediate follow-up to I Love Lucy, which had Desi Arnaz onboard in a creative role early on).
If that turns out to be true, it's a total shame. Lucille Ball may have been a terrible studio head, but she was a very, very funny performer.
The first year or two had the same writers as ILL. TLS was a gambit with CBS who wanted Lucy, but Desilu wanted things too. After the first year, the writers left, the premise became very fluid. It and its sequel sound lazy and self-indulgent (lots of guest stars playong themselves). It was highly rated through the poor-taste, middlebrow Sixties, though.