I think you've nailed it better than most here Mantis. Junior football is nailed into Scottish football culture and people are brought up in it and identify with their local teams often more than any senior team they follow over and above.
The other thing here is that the players should be considered, we're often talking about players that might not have the ability that would carve themselves out a professional career but want to play at the level they're able to without spending their entire Saturday travelling say from Dundee to Dalbeattie to get an evenly matched game.
Junior football has served both fans and players well over the years and until the SFA comes up with a plan that isn't half baked and takes account of the wishes of clubs and players then they aren't offering anything to teams that do, It might be that some clubs fancy their chances and make the jump and good luck to them, it might be that under a well-though out structure all these teams and players will find their level and get a game that suits their working/family/social lives. Until somebody can demonstrate that they've achieved that though the Junior culture is going to hold strong because it isn't broken, it's providing all that already and anybody who's looking to change that is going to have to offer better. That hasn't really happened yet.
In East Lothian we've got Musselburgh, relegated this season but still strong, we've got Tranent going from strength to strength, Haddington and Dunbar who are both currently on an upward trajectory and all four of them playing in the same division next year. For people who care I find it hard to believe that you've got a league that could be more exciting for supporters, throw in other local games for us in Musselburgh against Dalkeith and Arniston and a couple of trips up to Downfield and Kirrie and we;ve got a great season ahead for those of us who regularly attend.
Aye, there might be teams who've maybe outgrown our set-up but Junior football itself isn't at fault and it isn't dying, if those teams feel they want to leave and see how far they can go I'd wish them good luck but I wouldn't want to see the destruction of what we currently have because what we currently have still suits many of our clubs and players.