You can't use Google Wallet to pay with NFC, they don't have Miracast, and Chromecast can supposedly work but I haven't been able to get it to work. Those are the three major hurdles I've found, but getting away from Google was a priority so I'll live without them.

NFC can have other providers other than Google Wallet, but I haven't found any that I find trustworthy enough yet. Supposedly the EU is making an alternative.