Your project sounds fantastic! The lean approach with fast loading times and essential data is spot-on. Here are a few suggestions to enhance it:

Real-Time Alerts: Implement notifications for price changes or news affecting specific coins.
Customizable Views: Allow users to save custom views or dashboards for their preferred data sets.

Educational Content: Add a section with guides or quick tips on cryptocurrencies to help newcomers.

Mobile Optimization: Ensure the site is fully optimized for mobile use, perhaps even developing an app.

API Access: Consider providing an API for developers or advanced users to pull data for their projects.

Great work on cryptobubbles.com, keep refining it!