I don't think the change is Worrell boats will affect the I20. People were buying them before they were selected for the Worrell for the same reason almost all people buy them now.
I bought mine because it was a super performing, well-thought-out boat that is very fun to sail recreationally. The spinnaker is easy to use, and really turbocharges performance downwind. The boat is extremely user-friendly, built to a very high quality, steers like a dream, and is easy to sail. These same features also make it a good race boat. None of this will change.
Now, if I could get a 300 lb version of the I20, that would be even better. I applaud the improvement in cat technology exemplified by the F16HP/F18HT class. I think we all will benefit from this over time, just as we all benefited when mylar sails became common, or in the way that easy-to-use spinnakers are becoming more common now.
Sail fast and have fun,
Alan Thompson
I20 - San Diego