Yes, interoperability is good.  Do you have a specific concern about the change that I proposed?

If not, and you're instead just trying to ensure conformance, by all means read the draft specification that you pointed out and look for reasons why my suggested change would be the wrong thing to do -- that would certainly be useful.  Otherwise, it's hard to respond to non-specific "are you doing the right thing" questions with anything other than "yes" ;-)