During a work-in-progress profile build mode, when researching a profile and adding new, unique sources, I will sometimes split out the source category into (i) additions and (ii) original Profile sources. Note that these source additions are always unique to what's already been posted.
I agree with you regarding a format for the (presumably) finished profile it should agree to Wikitree standards and I wouldn't advocate the use of two different categories for sources on a 'Completed Profile'
But, during a Work-In-Progress mode, where coordination is required in addition to allowance for review time arranging a text section with 'highlights' for the next reviewer isn't counter-productive. "Be inventive, be creative, try your hand" is the tag I've seen on hundreds of profiles uploaded from gedcom (which are a complete mess but that's another issue entirely).
I apologize for the confusion with this issue: I should have clarified immediately I wasn't referring to a completed profile when I discussed a tactic of mine while recording sources during a profile 'build' phase.
Leigh Anne