DD6 used to be a kreativ speller a year ago but her spelling has improved massively. The school's approach was to just let them 'have a go' when they're doing creative writing, so they can concentrate on letting the ideas flow, and the teachers will only correct a couple of words per story, or when the kids request it. They do actual spelling at a separate time.
We've been happy with that approach and have been reluctant ourselves to correct her spelling because some of her attempts have been adorable! smile A fave was 'ch' instead of 'tr', as in chrik (trick) and chrayn (train). But we are a family of excellent spellers so I knew she'd outgrow the cute spelling phase all on her own far too soon, and she is smile