with a daily token reward with reward chance for something else (maybe RLS). The idea is to have a different way of playing the OGs requiring a different set of skills and tactics. Id suggest the easiest ones would have lower extra reward chance (IG, AM)

Here's the sizing i'd recommend

TK challenge, 2 players only
IG challenge 1 player only
ISD challenge 1 player only
AM challenge 1 player only
EK challenge 3 players only