The big, big missing thing is: archive and view old whatsapp chats with images, video and audio data from google drive, having just an android phone.

The next point was: having an IPhone, not success getting the old Whatsapp chats from google drive into there, started to use Whatsapp anyways - now a chance to get these old chats from google drive to pc and merge them into the whatsapp chats on IPhone. That would actually be very nice.