Chuck
I think the first problem here is that everyone is more comfortable with what they have always done, and were trained to do. The assumption is usually if I was taught to do it that way - it must be right. So getting people to accept there is another way is tough.
Personally I can see no disadvantages in what you suggest and one or two advantages. That would suggest your technique is better.
However, there may be one danger and that is in changing what you have always done. If you were taught to advance the prop during the approach, and change to doing so only in the event of and on a go around, in moments of stress there may be a risk of reverting to your earlier training and assuming you have already advanced the prop. In short it takes a while for a new technique to become second nature - clearly not a problem if you were taught the "Chuck" way from the start.