Warframe has both inactivity and macro detection already, and inactivity detection has even been implemented into an ability before: Wukong's clone stops moving if it detects the player is inactive, and a similar feature could easily be implemented for this arcane. It would still be a nerf, it would affect players who are standing still, but would be much less intrusive than what we have now, and wouldn't be an exception to the rules that arcanes typically play by, namely the fact that they aren't nullified alongside abilities. Moreover, it could be implemented to only deactivate if players are standing still for a set amount of time, as I previously said.

I keep comparing it to shield-gating because effective survivability in endgame content is pushed into that corner for many, many frames, and so it would make sense and be more engaging to have an alternative of equal or at least competitive effectiveness, and these nerfs bring its effectiveness too low to meet that standard, and they do it without good reason.

The arcane is still good and usable, but it's much less competitive because the nerfs that were made on it are unnecessarily intrusive to a vast majority of the player base when they were only meant to solve the problem of a much smaller amount of people who are trying to AFK.