I would love a 30th anniversary edition of Bat 2 with bonus DVD, however the idea of a Kickstarter doesn't sit well with me. Meat Loaf is a multimillionaire and the companies involved are all worth billions. Any of them could easily pony up for the rights to release either show if they really want to. Why should I pay for the opportunity to buy one of their products?
I suspect the real reason they've never been released is simply that Meat doesn't want them to be released. Given recent events and that Patti features in both concerts, I suspect he may have even less desire for their release.