2 patches ago with the hero updates, all our old F2P heroes did not get any type of stat reset even though a lot of them were drastically changed. I feel like this was quite unfair and we need to either get 1 free stat reset on those beginning heroes or make us pay something like 1000 Linari to reset them once. We need some way to reset the stat cards on the heroes after they were changed this drastically. As lich for the F2P heroes, command cards were usually always thrown into Grimms for example due to the evasion and might cards were thrown into Avalon usually since the arrows were worth maxing still.
The major changes to heroes like Avalon and Virion with the summon troop changes, really require a stat adjustment and I feel we should be given one or else it just makes us suffer because we started playing the game sooner. Might be an unpopular opinion if it is a realm that started after that patch but my main server currently (Realm 55) was made a month before the patch and everyone invested a lot of cards into heroes that no longer use them because of the changes.
TL;DR: The hero change patch made the stat card distribution completely garbage and stats that were good prior to the patch were made useless for those heroeos after. Need a reset on those cards (just like how the paid heroes got, the F2P heroes also need that stat reset).