The biggest hurdle to overcome is the access to the data from the telescopes - SETI@Home gets its data from wherever the telescope is pointing, and is configured only to work with the H2 band in the region of 1.4GHz. To get data from other sources would have an associated cost both in terms of dollar bills and man-hours.
Member of Seti PIPPS (Pluto is a Planet Protest Society)
Somewhere in the (un)known Universe?
Yes, I did forget to include in the previous posting text that other radio telescopes would have to be used.
However, when working DSN spacecraft you have to have a dish that supports (in software and hardware) the ability to track a DSN spacecraft.
So, the PR location for SETI would be immediately disqualified.
CSIRO Parkes is probably about the only location that could support SETI@Home signal digitization and CCSDS band interception with the least changes.
There are others.
The ALLEN ARRAY could do SETI test signals work per V1, V2 and NH now -- but some kind of separate signal integration may be needed as a single dish in this array is nearly deaf per Voyager Craft signals interception.