Scratch your own itch always work!
Then there is the extra mile of making it work for everyone else, and making it look great. My fiance helped me a lot on the former. She has a lovely taste in color picking!
While X hasn't been dying just yet, I think this would probably kill it. The value of X comes from both the creators and the free users and lurkers. If it's just full of creators and die-hard lurkers, the value decreases a lot for both.
I barely use Bard, but I do use the Search Generative Experience and the Bard-in-Google Docs quite a lot. I find both quite useful as they integrate quite well into my daily workflow.
Of course, I do not envision getting users.
Only for fun and training - I think having examples of simple solutions to seemingly hard problems in mind makes it easier to come up with one in the future.
