People have been making websites exactly like this since the 90's.

Every single one of them have ultimately been massive failures, because you are re-inventing the wheel and putting a window system that you control to sidestep the window system that I control.

> I had a lot of fun in building it

Yeah, me too! But I learned my lesson.

Reminds me of some often-repeated suggestions that take the form of "every developer should build their own X" where X might be: blog, ORM, key-value store, database, OS, distributed computation framework, neural network, decentralized currency. But the one that you really have to be afraid of, in terms of time-spent followed by a new life-long obsession is "your own keyboard".