@1. Sure, but I'm sure some have none, and information like "ING Black MC can convert to Flying Blue and HHonors" or "ABN Gold Visa can convert to Miles&More, IHG and SPG points, but the rate sucks" would be helpful, especially personal experience.

@2. I know I can access lounges in Amsterdam, Prague, Budapest and Kosice without any issue flying on any carrier. That's 90+% of my personal travel. The question is, can I leverage a card to get free access? Paid I can already get on my DC.