Suggestion to add new measurements

(this is a machine translation) I propose to add the ability to create your own portals in dimensions, this could be very helpful for map builders, so that everyone can create their own change, set the parameters of which blocks this dimension will consist of, (add some presets so that you can choose like this the world looks like air islands (endre world), or a world like hell, or ordinary earth), one could also add the ability to create your own pocket dimension in survival. create a new command block that can set measurement parameters, dimensions, structure, what blocks are needed to create a portal.