Among all the discussion surrounding FTL, one thing I have not seen is a verdict on the wisdom/idiocy of upgrading to level 3 sensors.
For those of you who never have, doing so allows you to see the power distribution and damage status of the enemy systems in the same format by which you see your own. (individual upgrade bars, repair status, etc.)
I've gone to level 3 twice, both times I was spoiled with scrap. I found it mildly interesting but it did not influence my SOP in combat.
Where or when would level 3 sensors make sense, if ever?