The person this thread started with was trying to read sheet music, not play by ear. So you aren't doing them any favours by making it much harder in the long term to read the music that's available for the instrument, and making it more difficult to play with other people.

The recorder may very well be a chromatic instrument, but the accidentals don't fall to hand in the same way in different keys.

I don't understand what you're getting at here - you play in G on a C recorder using the same fingerings you use when playing in C on an F recorder, and so on.