I've never seen an address needed for a cc charge, although sometimes a zip code is needed.
4. We're indeed a bit later than elsewhere, but there are many now.
Blik supports one-time, recurring and deferred payments (that last thing is just being implemented by few banks but probably will be available everywhere soon), and one-click ones that don't require PIN verification. I'm not 100% sure but the only thing that's not possible is charge-back - if you pay with Blik, you're left with a standard complaint for payment that caused problems.
Last year I was using Blik to pay for my taxi to some 80-year old private driver because I didn't had enough cash - he was totally fine with it and as I noticed his car had even a Blik sticker.
Not sure how other European systems work like but I assume these are pretty similar in terms of functionality. The 6 digit temporary codes generated by your bank app and verified by secondary PIN will stay here along contactless payments done by cards or phones, watches.