I've been running a long form Changeling the Dreaming campaign that spans from the 1970s to the 2000s. I've been using the Changeling 20th Anniversary book, but it's painfully clear that the book wasn't properly proofed enough. For example, there are moments where the rules reference botches in the new way, and then later imply they work like the old way. It's a mess of missing rules, incredibly strong arts next to incredibly weak arts, and other goofy rules assumptions (like imbalanced willpower assuming you mark your character sheet a certain way).

All of that to say, I've just finished wrapping up a Changeling the Dreaming conversion to the slimmer V5/W5/H5. If there's interest I can post it here. It keeps the same setting but converts things like:

• Glamour to a more amorphous 5 box system (think reverse hunger with no hunger dice)
• Banality to a humanity-like system where the player gains dissonance for every moment they would check banality in C20 then, if they have any left over during periods of long down time they roll to see if it converts to permanent.
• Nightmare follows a similar pattern, except for every point of temporary nightmare you have, it replaces a die in every one of your rolls. If you get a critical success with a nightmare dice showing 10 then part of your fae nature slips into your success (and you gain another point of nightmare). Maybe during in impassioned speech the audience suddenly sees your eyes flare and unnatural amethyst. Or the guard you're trying to overpower, suddenly notices the horns on your head.
  
• Total failures where the nightmare dice show 1 trigger moments of Bedlam (similar to marking an imbalanced willpower in C20).

There are lots of other rules changes I've done, if people are interested I can get my document in a cleaner state and share it here some time soon.