First reaction to your idea of a kid's island:
"That sounds brilliant"
Then I thought:
"But it will just end up being the horrible part of the park where the old rides go to die"
I'm not trashing your idea, just saying what will happen to it with Thorpe in control.
A family island might start off great, preferably with a total refurb of Neptune's Beach, Depth Charge living there, and a family coaster if it fits.
Here's my problem:
They have this land that they made and never intend to refurbish, and a decent family attraction that's been left in the main park (Quantum for example) starts to get rough and rusty. Instead of getting a nice new one, Thorpe dump it in the kid's land and stick a shop in it's place.
Also, it's worth thinking that even thrillseekers who go to Thorpe still go on Depth Charge if there's not too much of a queue
Thats true, Thinking about it , it would get kinda neglected as its off the main park.
Its reasons like this that ive always said, Alton Towers is my favourite theme park, but Thorpe has the better rides. With the exception of Swarms island, the park doesnt have the look and atmosphere of AT (and I hate the layout), but it does have the rides to make up for it, and being the adrenaline junkie I am, I would choose Thorpe is given the choice (Although haven't been of The Smiler yet
which looks like it could easily compete with Thorpes rides, well maybe not Stealth)