I probably won't make changes in the near future, but I've been thinking about the captcha issue, and I wonder what people think about reCaptcha.
Where reCaptcha is used now, something is required, and AFAIK all other captcha services can be OCRed and are therefore useless. End-users often like SolveMedia, but those seem really easy to OCR. I actually really like the image classification approach on a theoretical level, though I hate relying on NSA-lite Google, and occasionally on Tor they throw you into some insane black hole of difficulty (though you can change your Tor exit to fix that).
solving recaptcha on the phone is hard and it takes much of my ram and as a result im oftenly kicked out on my browser and i need to solve the recaptcha again but it works fine on desktop and laptop. i think the letters captcha are more easier and consumes less ram.