At the moment I am on 6m MSK144 RX and already EI, GD, DF and F have been spotted and it is only 1013z.
MSK144 really does seem to change 6m. Unlike most other modes, it works without Es or F layer propagation, so 6m can be used whenever. All that is needed is patience: when a burst occurs signals are strong. Outside an MS shower these bursts come randomly and last only a few mS with my poor set-up. I am sure a few dB extra RX "system gain" e.g. a less lossy antenna or cable or another dB or so of RX sensitivity could make more stations appear more often. Pings that might be too short might be decoded. Despite my poor system I still manage far better than I ever expected.
UPDATE 1932z: 10 stations in 8 countries today so far on 6m MSK144 RX. Best DX Sweden and Switzerland.