At present, there are no options for backing up apart from a JSON export. We are planning on CSV export and import.
Printing is definitely something we are keen to improve, though is pretty tricky converting from HTML to pdf.
We are happy to experiment with pricing. Is 7.50 a month super-expensive - some family tree sites charge much more than that a month, and don't include embedding.
With regards password field, we don't obscure it for usability reason. Some people love it, others hate it, most don't care. Passwords, needless to say, are not saved in plain text.