I already wrote about the variants I would prefer (depending on player number) here: https://phuks.co/s/Diplomacy/11297
I'd be willing to GM next. Whether as a dedicated GM, or as a GM-player, would depend on the final number of players who want a re-match, and what variant they'd prefer.
One change I would do is week-long turns. The 2-3 days per turn felt a bit rushed, especially with players who didn't respond right away and/or had to be caught in IRC to squeeze a reply out of them.
I'm setting myself up as tie breaker and also voting for 7 Islands so we can move on.
I will later use an online dice roller to decide who gets which country. It is the Metstubchen roller with the code "FD2-2017", directly linked here. I'm giving the link out a few hours before I roll so that you can see I am not switching to a different code if I don't like the result.
Order of players, each assigned to a result on the D7 (I will later use a successively smaller die and collapse as countries are assigned):
Countries will be given out in alphabetical order: