By sending nukes to your own rooms to reset the safe mode cooldown as you like seems like an unintended game effect. By utilizing this, you can keep safemoding up in a room as long as you keep sending nukes.
I know in the past, respawning for the safe mode resets has been considered as abusing game mechanics, so i wonder if this falls in the same category?
Should this mechanic be changed?
This was recently used as part of an attack on MMO and I think the same player is now setting up again to use the same tactic. Which is why I would like to raise this question again, as its actively (ab)used and not just theory crafting.