I left the Bubble just before the beigeification started... I still love exploring but boy, none of these rocky planets attract me anymore.
Wish I started exploration long before this.
The issue is blown out of proportions - before 2.2, 95% of all wordls were uninteresting too. Somebody made a big story about it and now there are romantic tales about an exciting and colorful galaxy pre 2.2.
Most of these affected HMC and MRs were green with more haze - there were a bit more color variations, but not ny much. Even before 2.3, there weren't more than 2-3 colors per planet.
On the other hand, details on the surface are much-much better. Do land on rocky and ice worlds, those look nicer than before 2.2. And finding volcanic stuff is difficult, but rewarding - at least there is something extra out there.
So yes, in terms of sights you are better of, than pre 2.2.
That said it is true, that there should be more variations out there and the planets should be improved - but again, this is an issue since Horizons launch.