Possible but not a certainty
For the rest of the ex Juniors the best thing that can happen is Talbot finding the proper level. Be interesting to see what the LL looks like in 10/15 years. There's a few present day SFL2 and LL teams in for a massive shock in seasons to come as the ex Juniors (East and West) make the breakthrough.
I'd question whether certain LL clubs are really up for the challenge especially if the LL opens up a couple of places for relegation.