I do wonder how long it can be before CBBC drops in-vision continuity altogether - looking from a point of view of the rest of the market it could be seen as anachronistic - after all that form of presentation for children was all the rage in the 80s, 90s and to an extent in the 2000's before it suddenly died off on CITV when they moved to Manchester from Birmingham.
There is truth to what you say. Continuity worked well when there were children's programme blocks in the afternoon and Saturday mornings on BBC1 and ITV1 but once satellite channels started showing children's programmes all day and night then it became more difficult, and less cost effective, to incorporate continuity.
Remember it would have been seen at the norm for in-vision continuity on Children's ITV (particularly in the 1980s) as most ITV regions were still doing it, though ironically enough Central jacked it in a few months before Children's ITV went full blown live in 1987. There's a big table on Wikipedia which suggests most of the northern regions still had in vision continuity well into the 1990s with the exception of Yorkshire who (it says here) hadn't done in vision continuity since 1970.
I suppose the 1993 rebrand/relaunch of Children's ITV to an out of vision service was probably overdue from their point of view, by that point most of the network had dropped in-vision by that point (or been replaced as appropriate), though it would change back again five years later, then flip back the other way eight or so years after that.