The dimensions are a lot there is one for diamonds, iron, gold, emerald, and redstone, and one with all of it. There is One biome that is in all of the dimensions(except: nether and the end). There is a guard that guards them. Now with this new update we are now slowly entering the star wars age. If You have any Ideas Please Let me Know, and I will consider it. Thank you.
And here is the wiki: https://dimensionsoplenty.wixsite.com/dimensionsoplenty(you can also find a forum page for reporting bugs and to leave comments of what you want to see in one of the next updates here)
You can also download the other previous versions of the mod I mad here:https://www.curseforge.com/minecraft/mc-mods/dimensions-o-plenty