Thanks for this mod. It is really useful for building my 2nd base after my bootstrap base. I have 1 end at the first base and the other portal at the new base. Saves a ton of train rides during my move. Works exactly as suspected. Only suggestions might be more colors and a little larger bounding box on the portal. With a few top level legs I move so fast that it is hard to hit the portal some times. Oh and maybe a little shimmer animation on the portal graphic.

There is only 1 set of portals (in singleplayer) for balance reasons. I find that too many portals would make the mod OP because the portals don't need any resources/energy once you have crafted the portal orb.

Here is a preview of the animation that the portals will have in the next version:
https://gfycat.com/AmusingPaleBluet