Well, poor Henrique!

I understand you want to help to improve Avast and this is a noble and chastisingly painful experience and cause, but there is only so much you can do. I suggest learning how to code C and VB, then you can help improving the engines and updating detection routines and signatures, a perfect job for a junior programmer, and under my wing you would become a code mage but this is beyond the point.
I like Avast to be honest. The modular engines etc. But it's not about techs whining or people complaining, it's about common sense. I mean as a simple user after waiting months?? for signatures to be included, I would choose another AV. I've had some false positive I wanted to be included in VPS and it took a little time and was done and my contribution was for ever lasting. It wasn't as painful or long as it is for you.
May compassion help,
I commend you and wish you luck in your grand endeavor,
Trial_User_Re(Un)Installing.