I don't really see the point of knowing the power level of a watch that repowers itself when you wear it (and it will be repowered in few hours of wear). If you don't wear it, you don't need to know it has power or no power.
For a manual watch, like my MUT, as I rewind it everyday, no issue. For a watch like my Reverso 8 Days, a power indicator is useful because after a few days you forget when exactly you winded it for the last time.
Best,
E.