As long as Google Play will not display my name on the credit card to users, I am okay with that. Google probably already knows about me more than anyone including myself. The problem with the home address is that according to recent changes in the terms of service, the address is displayed to users.

Google likely notices when the name on the address and the name on the credit card aren't the same.

Actually, now that I think about it, maybe "valid contact information" also includes my name (assuming I don't have a company).

I don't know the situation in your country but in my own, every website needs to include valid contact information and valid means that you have an address towards which legally binding court orders can be sent.

Other than this, I think that any controversy would probably only increase the sales.

That's my point.

You are making trade-off. You lose something by separating identities. You can't promote your game out of your main identity.

I think that identity separation would only makes sense if you would sell controversial games. Maybe adult content ;)