Is there a minimum requirement of goalie appearances per week?
One thing that jumps out is that goaltending doesn't appear all that important, not just because of starting one only. Being a H2H points league, how much does a goalie really affect your weekly totals? On the surface, the manager with Smith seems to be thinking that way so the emphasis was on skaters.
I don't have time to do the calcuations, but perhaps you could use last year's stats and find out how much on average your starters would produce on a weekly basis (average out totals) to see how much of a goalie's production affects the total per week. Since we're not considering bench players for now, that'll at least show the maximum ratio of goalie to skater production and give you a better sense on their value. I'll bet it's quite low. If so, I'm not sure offering a second goalie would make much of a difference, but I'll wait until you provide the numbers.
All I've got...all I've got is insane!