What was your ‘Wow, I really should have done that a long time ago’ epiphany?
For me it is suicides. Just unlocked them this weekend and holy cow it makes the arena grind much easier. Given how much arena grinding I do I really should have done it a year ago.
Also really fun to see Diablo, Claire, and other suicide friendly champs shine.
Had a similar moment a few months back when I opened Willpower after reaching Thronebreaker. Would have definitely saved some units if I had done it earlier.