I agree the DL screwed up the initial implementation bad, but in my last to segments they handdled it almost right.

They boarded zone 1 through the breez line.

Then they boarded 2/3 in the breezway line only.

Then the rest through the general line, while keeping breezway open for straglers.

This addresses the 2 real problems they had initially which were:

A) zone 1 being dumped in with rest
B) "line jumping" but using the wrong line to get ahead of other meddalions

BTW, I STRONGLY disagree with the OP's actions. While other breezeway pax were lining up, he slides into the not-to-be-used general boarding line and expects to go ahead of them. I will give him the benifit of doubt of "general confusion" (certainly the case prior to last month).

The one remaining action needed by DL is to put a rope across the general boarding line prior to zone 4 being called. That would avoid the problem with line jumpers who just act confused.

And lastly, the reader should be on the line they expect more pax to use. Alas, in todays world of status expolsion the answer is not clear.