Ego could probably add an ice auger attachment to the Multi-Tool line-up. If needed, it could be gear driven (reduced) to increase the torque required. Or there is this universal setup to adapt a drill:
Actually looks like somebody already beat Ego to the game with a 40V offering:
3A and 5A, so 120W and 200W batteries.
Brushless power head for Ice Fishing Auger. You wouldn't even need to make the flights and cutting blades which would allow anglers to choose from many available in the market.
So now that I'm an expert on drilling holes in ice (LOL), I can confidently say that Ego FOR SURE could make an 8" ice auger attachment for their existing Powerhead system that would rock holes in frozen lakes all day long!
If that guy can buy a $100 18V cordless drill kit from Menards and spin twenty two 6" holes through 19" of ice on ONE of the two included (probably 1.5Ah) battery packs in about five minutes, well, the 2000W Powerhead with a 5Ah battery would literally blow people's socks off. It would just need a planetary gear reducer for appropriate speed reduction/torque multiplication and a nice long handle sticking out to one side so your non trigger hand could counter the torque.
There you go, Ego, another legit idea for a Powerhead attachment! :-)