The talks unofficially recognized Iran as a nuclear threshold state, which is the best thing that Ayatullahs could get from these talks. I am so so about these talks. I deeply care for Iran, Israel, and USA. If these talks can prevent any wars or military attacks, I am happy about it, but at the same time, I know that these talks will not make Iranian government to change its internal, and foreign policies. I doubt it if Iran stops supporting Hezballah, Hamas, PIJ, ... The point is that as long as Iran tries to act against Israel, there would be no stability and long term peace in the region. So, this deal may have potentially prevented from a major war(positive side of the deal), but it does not guarantee the long term stability in the region(negative side of the deal).
Yeah, recently there is a massive trolling between Turks and Chinese members added to the mess, as well.