Do you have or will you provide interactive graphs or calculators demonstrating the changes?
I don’t have “banked” XP since I was not yet at level 60 at the time of the first set of changes but I did have “excess”(?) XP since my XP would have qualified me almost for level 100 in the new system and so I have accelerated leveling right now.
I started on Zwift in Dec 2015. I’m currently at level 59 but with 556,831 XP and accelerated leveling 50>>98 (2x chevrons, the 20% discount).