Robinson RH100 ???
Interesting idea Swedish PpRuNe - A Robinson RH1100!
The FH1100 never really seemed to penetrate the market but was in the running (so I recall) with the Hughes 500C and Bell 206 - they all emerged around the same time.
If I'm not mistaken there have been several attempts to revive the 1100 but its just never caught on. I believe they even made an attempt at making it more pretty with some sort of nose mod.
There was a very public indicent in the early days involving an 1100 (can't remember the details) but I think it was an airshow and this may have put people off.
You're right about the Robo's space limitations and lack of design - very sad.