And, raw Etherpad has a lot of usability problems as well. Plus it's challenging to integrate it with an outside authentication mechanism.
I've looked at the code some and while on the one hand this could all be added, it's a clunky base. Node's come a long way since etherpad lite started.
Very true! It's not like it defies the laws of physics ... but, it also shows how much effort is needed to get to something with hackpad's usability on the etherpad core: years worth of work from very smart devs.
If collaborative editing were the main focus of what I was working on, I'd say "yay, market opportunity!" But as it is, I just want to be able to plug in (and contribute to) a good open-source option. Which may wind up being Etherpad, but I'd like to do better ...
I also don't see anything new or special about hackpad from Etherpad. Is it simply valuable because it has a user base? How is it that a startup built on open source product is more valuable just by having more users? I fail to see anything special about Hackpad.