Noticed there are a lot of us with Sovereigns around Houchus I - makes sense, USE and T6s, both seem popular! So just put something together that will be useful for myself, and hopefully some of you-
Although TNT Houchus still has a few free portals, maybe you don’t want to put a portal to your Sovereign in there for whatever reason - private for a few friends, you’ve got a WIP you don’t want people easily wandering into, just don’t want to take up a spot for some little farm you have. But want an easy to access portal. Well, here is one solution… 
From TNT Houchus, go through the Paka’s Sapphire Mine portal -
The hub is just a couple steps away, this is the view when you come through. Yeah, I gave my first planet a portal right there outside the hub before I built it, feel free to visit. 
28 free portals in here. If you are in that Miners guild I have, might be able to edit the signs yourself? But I will try to keep up with it. Won’t put out new tokens for closed portals for at least a week probably. And if it is popular, always room for another room next to it.
Could easily add something like this onto the other TNT Mines I have if there is demand - Serp jumps out that there may be some demand, and could quickly add some spots in there.