I've been thinking a lot about the moments
we missed and the ones ahead.
So I made
WhatifBitcoin.org - it's a quick way to see how past Bitcoin
investments might look today.
Would love to hear your thoughts

Is there something I can add to make it more informative for newcomers?

I think that you should move this thread on Project Development board, that will be more appropriate place for discussion.
Your project is amazing. I especially love the way you designed Bitcoin Supply Countdown. I think it will be good if you also include the portion of lost Bitcoins in red color in that supply. If you are a developer, this project is a good presentation of some of your skills, include this website in your portfolio.
Put donation address if you would like. I believe, some people might donate.
To be frank, your website makes me sad, especially when I set years to 2009, 2010, 2011.