I'm also a utilitarian baser, and I used to run out of storage space, because I get a great deal of dopamine from the creating a new character and just having everything on hand. I suspect I'm not unusual in that way.
What forever fixed that for me are mules. I made a character (unused 50s are better than lowbies, but lowbies work fine) for each AT, and send all the ATOs to them. I made another for Winter-Os.
That way I can keep the base small and functional, but also hoard the stuff I use often.
Note: In exchange for PLing, a player named @potatolove (iirc) once made me the most AMAZING base, a space station. I miss it so. I don't know if they're here on HC, but if they are and they read this, I hope they know how much that base meant to me.