Thanks, @Brigby.
Ok, so if Loki is gone from tokens now, the following is the list of 4* characters that are no longer available directly in normal tokens (ie. disregarding the trial Vintage Heroic tokens) nor (effectively) as champion rewards from 3* characters.
Carnage
Hulk, Totally Awesome
Iceman
Invisible Woman
Jean Grey
Kingpin
Moon Knight
Peggy Carter
Professor X
Punisher, Max
Spider-Gwen
Star-Lord
Thing
Venom (Eddie)
War Machine
X-23
Note that if you farm enough 2s, you can still get some of these 4s eventually, but if the 3* tokens aren’t being rotated regularly, then our “alternate source” of these 4* characters has been cut off as well.
And the following list is the 3s that are no longer available either directly or as 2 champion rewards
Beast
Colossus
Daken
Doctor Doom
Doctor Octopus
Gamora
Hood
Loki
Mystique
Psylocke
Punisher
Quicksilver
Ragnarok
Sentry
She-Hulk
Vision
I sincerely hope that the vintage heroic token is not the long-term answer to this issue.
If vintage heroics simply replace heroics for, say, half the events - then we end up pulling half of our tokens from the current pool, and half from the classics pool - which means we haven’t actually fixed dilution at all.
And if the solution is simply for us to buy vintage heroics, well that’s not really a solution either. It’s not like that list of 4s is devoid of quality either - Peggy, Iceman, Teen Jean and Punisher are definitely high-end 4s that are largely being removed from play.
Now, if we could exchange a Heroic for a Vintage Heroic (and vice versa) and have some control over which characters we would like to focus on, that might be something useful…