No wallet login will do for me:
- being logged always mean having to register with them first, which also requires giving them access to your account; honest ones won't abuse that, dishonest ones will.
- I only make payments frpm my computer, but I was installing this game on my smarthone, which I set up WITHOUT any personal details, including no financial information or means of payment. I know several person who had their smartphone stolen and LOST bank account which were locked to it. No money left on it by the time they could process account recovery the hard way.
No SNS or google payment either, I only register to anything using my gaming email. And I know for a fact that I am not the only one who take his/her privacy seriously.
Hope that feedback will help.