Depends on what your long term hopes are for the Sixers. If you want them to be a 45 to 50 win playoff team for the next 2 seasons that never contends, before slumping back into the lottery, it's good. If you're hoping they actually rebuild and build a young team that could contend for a title in 2-3 years, than it's bad.
A PG who is limited in range
A PG who is an average shooting (meaning he isnt good nor bad)
A PG who is not a good defensive player
I'd say it would be bad because it doesnt improve the Sixers. Keeps them stuck in mediocrity. By not signing there is no gurantee of improving either. But atleast you can move forward with rebuilding adding young pieces, roster changes. Adding his contract at his age where for PG a rapid decline is on the horizon isnt attractive by any means. There is a reason Denver got rid of him. He was solid but they didnt need solid, they needed better. And ended up getting just that with Billups. Who does everything Andre Miller can do plus the things he cant/is bad at.
Look towards the draft for the PG of the future. I wonder how Elton Brand feels since he came to Philly because they were a "Team on the rise".