Chatting to a teacher the other day, we spoke about looking for outcomes from the lesson. One way that is handled is by each lesson having a WALT ('We Are Learning To') and a WILF ('What I'm Looking For') - what is the intended outcome of the lesson (WALT) and what is the evidence it has been achieved (WILF).
It struck me that it might be useful to adapt that approach to the preaching context - having established the lines of meaning and application in the passage, to ask what I hope people will know, feel & do as a result of listening to the sermon and what the evidence of that might consist in.
It's not particularly revolutionary but maybe it helps to focus thinking on the hearer, rather than the deliverer, and on genuine transformation of lives rather than simply transfer of information.