I think they, and I said they, need to get a good solid singing front man to really carry this off. But he made the point that "all in good time".
Yep. And I agree to give him that time as well.
One thing I will suggest though, is that they can probably get much more vocally out of the pieces they have rather than just waiting around for a killer frontperson. Some well-placed harmony vocals can go a long way towards adding polish and professionalism to a band. In my band's previous incarnation as a 5-piece/no front man band we took things pretty far (the $1500 a night corp gig level) by working on having decent harmonies and finding songs that lent to the strengths of the individual lead singers. We had a lot of 'vocal only' rehearsals. Most of them were pretty tedious and annoying. A lot of nights were spent with guys saying "that sounds pretty good, let's move on" and me saying "no it doesn't. Let's run over that bit a few more times". Nobody, in my experience, seems to really like to spend much time sitting around singing harmony unless it sounds good---but if it already sounds good, you don't need to work on it.
It's often like pulling teeth to get guys to practice singing, but good vocals really IS what separates the garage bands from the polished, pro acts more than anything else, IMO.