I prefer the 10-8 idea.
We may get some new people signing up and then we'd have 10-10, the perfect split.
As mentioned in past discussions the idea for a second league is to make it equally fun and to tweak it slightly to make it "easier" for the more active/interested players to win. More relaxed drafting methods etc. Ultimately it can't be a carbon copy of the #1 League.
Obviously we need to decide this sooner rather than later.
I'm not too keen on the "random" relegation, for someone who has worked had and got 6th and missed out on 4th and 5th by a few points, the potential to still go down seems a bit blah. I think it should be a simple, places x y and z go down scenario.