Honestly during long form I would prefer option 4 (the small LDL) for a LOT8s forecast only. So in other words, what they have now is nice. The ONLY thing I don't like is that those with the national feed only see a US city-by-city forecast, and the LDL only gets through a few cities at a time, so you may have to wait a while to see the forecast for your city show up. But that would probably be a problem with all options.
I agree with Patrick that options 1 and 2 are very distracting to the long form show and have too much going on at the same time. Plus, there is a lot of wasted space.
Though probably in the minority with this statement, I also am glad they don't show the LDL all the time during long form anymore. To me and likely to an average viewer, I find it distracting to the show and find myself wanting to look at the LDL instead of the show. So their move in removing it was a good idea IMO.