Naturally, this is what I meant. Lost line (+lost buddy) and just lost buddy situations are different. The reel marking is no use if I am on the line to start with.
Correct.
I might be willing to carry extra back up lights for leaving in emergency but I am not gonna start carrying extra spools and reels to dump as markers to pull this into a joke
Personally I don't feel that it will be necessary to carry extra lights in the event of having to drop one. If I have to leave a light behind, I'll verify my other backup works first. If I'm on the line searching for my buddy and my primary fails, I still have a backup. At this point, I have the line, I have one backup and I'm going to pass my second backup on the way out if I really needed it.
If I've already started my exit, I still have the line and a working backup, so I will proceed to OW.
If my backup fails too, and I lose the line or don't have sufficient gas to exit in touch contact, then I'm having a really bad day and I'd like to think that the odds would be stacked a little bit better in my favor than that.