Interesting idea on the ult rework being a respawn beacon, hadn't thought of that. However I think if they had a legend that could do this then they need to remove the added respawn beacons this season, they seem to be everywhere lol.
A couple ideas my friends and I discussed about ult rework for lifeline was a ranged revive using the drone. You could activate like a hand held scanner and aim it your downed teammate then initiate the revive. The ranged revive takes just as long as a Knockdown Shield lvl 4 revive, however the Lifeline player is still able to move around and fight.
Another idea could be a weaker version of the area insta heal ult that was in the Dummies mode. It would have an activation time similar to something like Bloodhound when he activates his ult.
I am in agreement that Lifeline's issue is her ultimate, I don't think any changes to the care package would ever justify it as a useful ult. Other than maybe adding the gold weapons back in, or maybe a possibility for one of the gold regular weapons to be there (gold R-301, Prowler, etc.)
Anyway curious to hear thoughts on the other ideas.