I feel like I've only had the heavily alliterative Fender Franklin fretless ... great bass, great player, don't listen to any of his music ... oh wait, I had a Dingwall Combustion NG ... great bass, never listened to the music (nor heard of the bassist until after I'd owned the bass).
I guess a related question might be, would you buy your favourite player's signature bass even if it meant compromising on your preferred specs?
I don't think I would buy it, given that condition. If it doesn't feel good to play, it wouldn't be fun. Maybe if I were a zillionaire and had a collection like Geddy's I would, but since I'm not.... nah.
As far as Tony Franklin, I admire anyone who can play a fretless well. That said, the only work I've ever heard of his is the first album by the Firm. I still remember a review of that album calling Tony's bass line on You've Lost That Loving Feeling as "turgid". I have no idea why that's stayed with me for nearly 40 years. I thought he played well on that album.