Hi, I'd like to introduce people here to my mod RFTools. It has been in the running for a few months and is already included in a few modpacks. It is basically a tech mod with machines like auto crafter, RF monitor, power relay, item filter, teleportation system, ... But the main feature in this mod is the dimension builder. This is a system where you can (like with Mystcraft) create your own dimensions. But RFTools dimensions don't have instability. Instead you have to power them with RF (also to keep them running). More expensive dimensions (like diamond blocks etc) cost more to maintain.
Here is the link to the mod forum: http://www.minecraft...tation-powerful
And here is a link to a gallery showing some of the dimensions that you can make:
Let me know what you think.
Ah yes, and if you're interested in following development. You can follow me on Twitter: https://twitter.com/McJty