1 - Some playground prior to signup, similar to Runkit could get you more users.
2 - Some simpler signup by Github etc. would get you more users.
3 - Right click is taken over by the site, which blocks LastPass context menu which adds another layer of difficulty to signup.
Good luck, thanks
Ooh! Right click / context menu. I gotta fix that. D'oh.
I think there are different schools of thought re: providing a playground. We certainly have done that before with smaller launches. Our experience (anecdotally, I haven't measured exactly) is that while "playground" type experiences can sometimes increase signup volume, they tend to result in lower engagement rates overall.
I believe the basic underlying hypothesis is that if you can solve a problem somebody is having and they know that, they don't care how it works: they'll sign up and figure it out. However, if you provide a playground, you artificially select for a much higher proportion of folks who enjoy the novelty of new technology / products and aren't necessarily likely to stick around.
Food for thought, anyway. Don't have raw numbers here.
This particular product probably has broader appeal than you think—
For a broader audience you'd definitely want to dumb down the entry point. If you're still in the smaller audience/specific traction stage, it probably makes sense to stay more technical.