I have to agree with the OP. I adore strongholds, I have spent an ungodly amount of credits (and cartel coins, if I am to be honest) on decorations, strongholds, and stronghold expansions. I'm actively working on making a guild consisting of a 'main' and enough alts to allow me to form my own guild and gain a flagship expressly so I can decorate it.
Strongholds and decorations are honestly the endgame for me.
However, there aren't enough hooks. My Yavin IV stronghold is something I have been working on for years at this point, tweaking it as I unlock new decorations and new ones come out, based entirely around being a military base for a bi-factional organization. Mandalorians, Imperial and Republic Military, Sith and Jedi training one another in a quest for balance, Eternal Alliance soldiers present in small numbers (mostly because they are still a pain to gather, given they are only purchasable from Iokath rep vendor with Power Shards) with carefully places turrets, tanks, and mounts to make it look as close to an actual military base as possible. It is only 95% done right now, because I've removed a significant amount of decos to tweak a couple of rooms, but its a massive space for only 750 decos.
I just bought alderaan, and despite having over 1000 hooks I have the feeling I will have the same problem there.
For years, I've moaned in global/trade chat over the fact that you can't save decoration 'layouts'. I can't have multiple Yavin's saved, able to switch between them at the click of a button, which means I have to spend hours drawing crude diagrams with scrap paper to figure out how to a deco would look best in a room because if I clear that room, I have to manually put all the decos back and adjust their settings to get them how they were if the change looks aweful. I'm not a programmer, but this seems more than possible as a feature.
I could keep going, but quite honestly I don't know that it will help. Instead, I will just say this: Strongholds, player housing in other words, are something that this game has that puts it far beyond other MMORPGs. WOW doesn't have any, ESO isn't all that impressive (in my opinion), and while FFXIV is fantastic, that game has HOUSES. Beautiful, with a small yard etc, but they are still just a single house. Strongholds are a great strength for SWTOR, but they can be stronger still