The 5 star tier shot long term life for high end players in the foot.
Unless they introduce tier 6 later this year and not make such a drastic leap in power there isn’t much way to undo what has been done with the power leap.
Like every transition method before, having many options at a high but not maxed level is best.
Issue is, the latest/ classic actively fights against that unless people have been trying to cover them from the inception of the 5 star tier.
It’s really poorly done and is nothing more than, try and grab from the latest and make most of your roster obsolete, OR chase the smaller by release chance of covering a classic. Even if they divide them into packs they still didn’t come up with a good distribution method.
The only reasonable way to riff on what they were trying to seemingly accomplish with the classic/ latest would be rotation periods, either a month or every few, where a certain set of characters are the highlight (say Iron-Man, Panther and Cap Spider for like a civil war situation, then switching to masters of magic Gadgets and space or something and going with strange Thanos Phoenix Goblin, adding new sets and redividing some appropriately allowing people to prepare etc). And a good way to balance new packs would be to have two concurrently (say thanos was due in march of 2018 but got moved to a new pack, aside the old one he would have been in, that way the person looking for goblin in this example still has time to go to bat)
Maybe it will be adopted, maybe they’ll keep classic.
But the only reasonable way to transition now, aside from whats good for the games health, is to just act like it’s black friday and go ham on Latest tokens, which literally have 3 characters sharing 10% odds.
For reference, OML and phoenix had 10% then 5% each respectively. Which is why some non whales were able to squeeze there way over successfully in that period.
Most since have likely been dumb luck.