I dunno about Tribot as I've never even looked at them beyond word of mouth, but Sythe is most definitely still open. They attract many Villavu users as they are allowed to charge for scripts in Simba. Charging however, does not guarantee a quality and I am not responsible for any purchases you may choose to make.
Lack of feedback relating to what? You're the user, you're the person supposed to be giving feedback to the developers. As far as script quality goes, samerdl is correct:
This is true, most 07 scripts are created by people that aren't in the Member ranking simply because most higher developers are sticking around in EOC or waiting until certain things are changed to improve 07 botting in general. The majority of 07 developers I've noticed have joined and learned the language within the last 2 months, you're not exactly looking at experts with that. (No offense to anyone, but with time comes practice and skill

)