I suppose you don't see a lot of live concerts of 60'ers redux.
I do see a lot and generally they rock like last 2 days with John.
So was almost every concert of 60'ers I attended in the last 5 years. And i think when i start counting the number of shows I now talk about is about 100.
Besides that, original line-up isn't necessary. I enjoyed every tour since 1985 and I loved them all.
I also had a great party with BBB some years ago to celebrate our 40th birthday and our 30 years fandom of mk. We had an excellent DS coverband and rocked our heads of with all DS songs
It's a matter of enjoying what you get and enjoying great musicians with great songs is the best thing in life.