Original poster here.
I'd like to see Evernote improve its synchronization technology. I just did a test with Google Docs, and when I type on my desktop, the letters appear on my laptop within about .5 seconds.
Frankly, I don't need a .5 second response time like Google Docs has. But I do need a 5 second response time.
Fixing synchronization so that it is within spitting distance of gDocs would take a big engineering effort. You'd need "always on" connections to allow "push" messaging, and the messaging protocol would have to be redesigned around the idea of sending single actions or keystrokes at a time. With that said, it could be done. Etherpad-lite was, if I recall correctly, written basically by a single developer: https://etherpad.org/
I don't mind paying for Evernote, but whenever I worry about whether changes have already synced, I wish that the document were in gDocs instead of Evernote.
With that said, I'm quite impressed by the new management and the development pace since I made my original post, above. This is a gorgeous new forum redesign, by the way!