Thank you.
I actually completely agree with what you say about continual maintenance of scores, and one of the things that I really felt I learned at Darmstadt was that a piece is most effective when it's been written with feedback from a performer (and I've talked to various people about the need to maintain scores rather than coming up with a final 'perfect' version).
But it feels like I'm going against my training to some extent. I've had the whole 'professionalism' talk on a number of occasions, where young composers are told of the importance of making sure that everything they present to a performer is correct, unambiguous and on time. Conversely I've always tried to encourage my students to experiment with workshop situations rather than viewing it as a performance and a recording. It's a slightly unsettled time for me, with a lot of teaching and a lot of composition having to be done in a very short space of time, and this has probably more to do with my uncertainty than anything else.