Red-1
I used to be decisive, now I'm not so sure...
I don't like shut down horses either-I like them to be forward. I guess its just where the cut off is.
Lovely forward horses are made, IMO. They are confident but still full of fun. OH's Charlie Horse was one of those. He could buck his way round a collecting ring yet it was hilarious. He knew exactly what he was doing, would never put anyone in danger. If the rider shook a little bit loose he would stop and put his angelic look on. If the collecting ring was busy he would wear his angel face and be foot perfect too.
A sharp horse does not look round before they do what they do. As I said above, they don't think then do, they do it before they or I know what they will do. A sharp horse could knock into another horse, albeit not intentionally.
A sharp horse can become just fun with time/training/care. I think often sharp horses have some low grade pain (saddle fit, joints, ulcers etc) or are not confident with the rider/handler.
My wonderful Jay horse was very sharp when he came. He was very reliable after 6 months or so.
I too list myself as one who would not take on a sharp horse now I am older and creaky!