Well I am not talking making a default fs, even though several distros already accepted it as a viable fs. And btrfs have been officially out of experimental stage for almost a year now.
Since I am not building a business server I ok with it being in review stage at red hat.
I have been using it for over a year and a half nicely. Also I am not using it for system disks even if I want to. I prefer to use what the distro recommends as default. I want to use it for my data drives since I already have pools bult and filled with data. But thanks for warning.
Ps. Even though your plan is to use xfs aa default, you should not overlook the proliferation of btrfs and not supporting it. Centos7 already supports it out of the box. It should be available.