Standards are a compilation of rules…
But some things need to float free for a while until you have enough information to make a call on the best practice. When a new tool or feature presents itself, let users fiddle with it until they figure out some optional ways of using it. Let them play around and try it out. Work it through a few files or even a project or two.
Once you have a few people who have tried a few ways at doing one thing, get them together for a discussion. Ask them what method should be used by all. Let them defend or sell their way. Let them knock off the rough edges and come away with a unified method. Have them all test it out and then if they all agree – put it into the standard.
There will be a time when no rule applies to new tools. Embrace that time and use it to your firms advantage.