WifeyClarky I am rather amazed that you think you have nothing to show for it: You have 20 years of entertainment and pleasure to show for it!
I find nothing wrong with your "style" of play. I think a whole lot of simmers do what you do. LOL
But, if you want new ideas to spark creativity, then you might want to try themed worlds. For instance, in one of my games, I turned Oasis Springs into a Batuu inspired world, complete with Batuu critters as occupants. It was a lot of fun to make all the lots into Batuu commercial and residential lots. And I had to play each family in order to upgrade all the things to unbreakable, cheat each family to flag them for never cull, immortal, and static needs, with a cheated and maxed out $999,999,999 for money. (That way, it guarantees your game will not get rid of any sim you have invested your time into to make the themed world.) I also made sure their relationships were 100%, both sims and pets, and so forth. Than enforces a certain amount of play without tying you to a family, but does make each family familiar to you, so you have a sense of community once you are done.
With the new expansion, I am seriously thinking of turning the six lots in the green part of Windenburg into a hobbit village, with the Tudor side as a LOTR inspired human village. Then the island part can have a large castle, a couple thatched roof homes, and the rest of the lots will be forested with fishing holes and so forth, maybe with a nomad family living off the land, possibly with foxes, wildcats, and wolves as pets. Playing each of those households and doing what I did in my Batuu world will take a while and be fun.
You can make Strangerville mostly aliens. Build flying saucers for them, on some lots. The human part of that world is really good for a trailer park/mobile home vibe. Possibly a tiny home or two. And of course, you can make an actual military barracks there, as well. Of course this assumes you have killed the mother plant. If not, be sure to do that before you leave Strangerville.
The enchanted part of the new expansion pack would be ideal for unicorns. If you don't mind having CC in your game, lots of enchanted creatures have been offered that could be added. For instance, TheKalino has hippogriff, dragons, phoenix and so forth on her website, as well as wings for horses to make a Pegasus . A nomad sim that happens upon these creatures in an enchanted forest would be a great story line for one family in that world. Especially if the neighbors were other types of fae, like fauns and elves on one side and faeries with pretty wings on the other. The "Waffle_GhostlyGait_Horse_Trait" mod allows for horses to "fly" so your pegasus can be hooves off the ground "flying" instead of running like a unicorn (uses the ghost horse ability to float around).
Setting up some lots in the enchanted part of the world as outdoor living and some lots as new expansion indoor builds for the same types of families will give you a variety of experiences as you play those families to get them set up in their neighborhoods before moving on.
In my themed world game, I made Mt Komorebi into a totally Asian world. I spent a lot of time in CAS creating unique and very Asian looking sims, with traditional clothing/hair styles. It turned out to be a really beautiful world, with Asian inspired commercial lots, as well as unique Asian homes. The only non Asian living there was Santa Claus in a modified "globe home" lot that had a door to get in and out of the globe (transparent roof that went all the way to the ground, covering the lot, other than the door in).
I could go on, but I think you see where I am going with the idea of themed worlds. I have a lot of happy memories of my themed world game. I would highly recommend trying it. :)