Pretty sure you're able to download your raw data.
(Just bought this a couple weeks ago... waiting for my analysis.)
Yes you can download it and then you can use a tool like Promethease to link provide a report on how your SNPs match up with various research on SNPedia. It's a bit rough but it certainly has lots more info than the reports from 23andme.
This is true. If you want your data completely erased from their system, then neither you or 23&me will have access to that data any longer. Your data is presented to you online only. While they have your data, your data might be sent to third parties but not at the individual level unless you give them consent.