I remember hearing Wang at a con complain that he (Wang) was full of funny ideas and a comedian but they wouldn't let him "do" the humor, they left it all to Mulgrew and Picardo.
I find it hard to believe that Wang had some genuinely funny ideas. That's probably why they never included them in episodes.
Does anyone remember seeing Picardo on Home Improvement? He played the "annoying friend". What a shocker.