Well again it's just my opinion, but I've flown pattern comps since the start of the turnaround schedules, and I think that the planes(and the engines and radio gear) have become more and more capable of meeting the demands of the concurrent schedules.
Just today, whilst flying my Abbra, in high winds, there was someone else flying a (Prettner designed) Calypso.
That was a great model in its day, but I know which one I prefer.