I would suggest opening a support case regarding the issue with your jobs not properly using full and incremental tape pools as I have not seen this specific issue during any of the vendor tape testing that I have done or in the lab setup that I have so I'm not sure what could be causing that.
Regarding your feelings on the current tape support, I think it's only fair to point out that tape support is actually very complex, and most companies that have been doing tape support have done so for more than a decade so they have spent many years developing their solutions around media management and pooling. On the other hand this our our version 1.0 for this capability, and much of the feedback to this point has been excellent. Certainly there are many areas of improvement that are needed, but I think that's fully expected with the release of such a feature. I can assure you that future versions will continue to address the issues like this that customers report to us, and your feedback is appreciated.