Honestly it doesnt strike me as that big a deal, right now we launch Entrenchment and see who else is in the lobby for a game, straightforward, i dont have to click this to see Entr, click something else to see Vanilla, click something else to see Second Expansion or click something else for Third.
For newbies its very easy no mess no fuss. And besides ppl are going to have favs, you know?
Some peeps will love Entr, others will say "Hey i like the Diplomacy thing" and go for second expansion, others will say "I want to run 7DS in 1.05" and they will use vanilla, and the others will say "Hey you know.... Three was like AWESOME!"
Maybe later the devs will put in something like you know a load from menu when we boot the game... Load Entr, Load... Diplomacy... Load Three... Load Vanilla...
But its not a big deal, it'll come, and in my personal humble opinion, having just the same version "see" others of the same version is like "Too Easy" I like it alot. 
So dont fret, some changes will come, but i think the devs got the right idea on this, and the restart thingy wont be there forever, just give them time,
-TEal