We don't need awesome, just useful
So Colossus and OML were a win, but took 4 months to deliver. This is just too slow. I know this team is busy always designing the next great champ to milk the community, but how hard is it to just make old champs "useful"? How much thought is really needed to make old champs useful at least somewhere in the game.
Give them a simple power boost, an immunity, a crit boost, something on heavy like power block, etc.
You have extreme champs that have these in spades, and then old champs that have NOTHING. Just give something to all the old champs to make them at least something more than arena fodder.
And before you say "Cyclops, JF, etc. get used all the time" please realize using because no better option is not the same as choosing to use these champs. Check the data.