There has been a noticable trend lately for large scale kits. 1/72 scale, while small for aircraft and armor, is considered a large scale for ships. Trumpter has dove in the market of 1/32 and 1/24 scale aircraft, and 1/200 scale ships, and Revell of Germany has released the Type VII and S-100 in 1/72 scale. Hasegawa is releasing 1/32 Fw-190s and Bf-109s like crazy, and their new Ki-84 is getting alot of attention. This trend towards larger scaled kits, and the fact that the old PT boat has been a cornerstone of the model industry, like the old Revell 1/429 Arizona, and a few others, indicates that there's a need or desire for this kit to be brought up to current standards.
I think its a matter of time before we see a new PT boat from someone. The Elcos and Higgins boats, as well as the Huckins, were quite numerous and used in all theatres of the war. There's lots of room for variations of fits as well. I personally would have to buy several...
Jeff