Redline’s card doesn’t state once per round. If Sai coordinates a focus, I could grab a free TL off of that focus action. Then in Redlines activation, I could BR, boost, or reload and grab a second lock without using the linked boost/TL?

For anyone keeping score, I’m clearly trying to abuse Sai and Redline.

Correct.

Things are only once per turn if they say they're once per turn.

3:1 action to effect ratio feels awfully good to me. I dig it.