Yes, this would be a good thing for the Amateur Radio / APRS community. Supporting both Peet Bros formats along with standard APRS format that you have working now would be a big plus. Especially knowing that findu.com is supporting all three formats now.
The big advantage that the Peet Bros Ultimeter 2100 station has is that it directly supports a serial connection to a TNC. You can setup a weather station with no computer in the loop. The weather station is connected directly to the TNC, which is connected to a radio that transmits the APRS packets. The Peet Bros station was designed to send the data out to the TNC in a format that works with the APRS features in the TNC. They document and support a direct TNC connection.
The next level of WD support would be to parse the weather data packets directly from a APRS Internet Server Telnet connection… I mentioned this in another message. This would get findu.com out of the mix here. But, we better take it one step at a time.
Thanks for helping me out again on this Brian… 
mg