Benny,
I've never met Joe in person or been to his facility but I have spoken with him many times and received shipments from him in the past. I do know that he works closely with biologists and herpetologists who are working to conserve and identify Tanzania's herp diversity. I don't know of any other exporter with as many species named after them as Joe has named after him and that is a direct reflection of his cooperation and work with those scientists and authorities, and a reflection of credibility.
Regarding the survival rate and quality of the animals exported, your exporter may be able to provide 100% survival rate upon arrival, which is great, but the quality of Joe's F1 exports in my experience results in survival in captivity for significantly longer than in WC shipments in my experience. Survival rate on arrival and the length of time they survive after arrival are very different indicators.
Regarding who or how many exporters should be able to export limited F1 quotas, I believe it is better to limit the number of exporters able to do so. First, limited quotas for F1 exports are given as a means to make sure that only the number of animals that could reasonably be truly bred in captivity are exported to help prevent abuse from those who might be tempted to fill the remainder of the quota with WC animals. Thus, low quotas are a necessity to help ensure the F1 process. Secondly, the fewer the number of exporters allowed to produce and export F1s, the easier it is for the Management Authorities to monitor and verify the validity of the operation. Third, if more individuals were allowed to export these limited F1 quotas, all of a sudden 10 exporters each have a quota of 2 animals for some species. This would not help anyone because it is no longer profitable for the exporter to truly breed them if they can only sell 2 animals per year and the chances of getting a breeding group together in captivity is gone.
Chris