This has been mentioned up-thread, but would love to see TPA-MIA return (for connectivity to LA) and also maybe see DL challenge AA a bit to some of the Caribbean destinations out of MIA as well (BGI for instance clearly has a market from MIA with multiple flights daily on AA, and no current competition. DL hasn't been able to make ATL-BGI work, but 2x daily on AA makes me think DL could compete and do well with MIA-BGI).