Wow! the default generated world looks amazing! I really hope you continue this project Captain Chaos. This could turn out to be the best map generator yet. It's already off to a great start.
Just use Bedrock. You cant break it, and if you enclose the redstone all you would need is a simple combo lock and no one could get it short of brute force guessing the combo.
If haveing a huge combo is to annoying or you dont want people guessing it you will need some form of teleport method either with a mod or maybe the Nether but of course thats not truly safe.
Guess you didn't get past the first rule in the OP.
1
The flood button
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5
Guess you didn't get past the first rule in the OP.