Oh I would absolutely LOVE to see fourth age. Get the old PJ actors back to show Pippin writing the red book of west march, Aragorn and Eomers wars in the east, and we cannot forget the best bromance to ever bromance, Legolas and Gimli traveling around Fangorn, AND THE GLITTERING CAVES. So effing much they could work with there and far more open to original stories than the second age is too.
But alas, we get a hyper compressed second age instead. I'll take what I can get.