Apparently a newer 'inspired by' successor is https://store.steampowered.com/app/1371710/Rogue_Aces_Deluxe...

Few cycle tourists seem to optimize for using navigation tools or holding cameras while riding. Oldschool Europeans used to mount maps on their handlebar bags, but I haven't seen that in yonks. It might be common on a short-hop or produced-for-youtube thing, but to my mind it's not really the same mental space as touring, which anyone who has done it would understand: long distances, often daily goals or pre-nav, strong engagement with topographic change and natural environment = ~no need for while-riding lookups. Sure, if the road is well-surfaced and there's nobody on it, or it's a phone-photographed quickie: go for it. But unless it's a fleeting moment, most people I know would stop, have a drink, perform any lookups, maybe take a photo, then set off again. F=ma. Luggage means you have relatively large m. Fiddling with your camera while riding can be a bad idea.

This is interesting, I recall having some of these as a kid.

I'd say the key drawback not mentioned is that, in many riding conditions (such as but not limited to riding when in close proximity to vehicles, riding in high wind, riding in proximity to severe drops or road discontinuities, riding with heavy loads, riding downhill with luggage encountering sharp bends, repositioning legs for a hard ascent, etc.) you cannot always freely alter your physical stance to apply additional pressure to the braking system (as it may upset other concerns) nor can you afford a short latency to reposition to your stronger leg before applying the brake (or a short burst of climbing on difficult terrain).

So while functional in most conditions, I'd say they are in fact objectively inferior in terms of latency and control and thus safety and utility in many realistic conditions.

What could be an improvement (and may have been made already) is a speed-gated clutch, that is to say, slow reverse is permissible but a burst above the gate speed enables braking. This could solve a minority of the issues in terms of control at the cost of complexity.