I dont use this payment methods, so I cant help at all. But I can understand that they are crucial. I am really surprised (and disappointed), that no one did answer your stripe reports and he paypal issue isn't solved too :(
I dunno, but maybe you should wait till 1 april, before you throw everything away. From then on there should be regularly blog posts from lesley about tb itself. I think, it can make things much more clear if this project has a future or not. Since you dont ask for any very special stuff, I would expect this to be fixed.