In the mid 70's I had a pal with a 350 Ducati Dezmo - a wonderful bike. Following a rather nasty 'off' on another bike which damaged a shoulder, this guy had to ditch the rear sets and clip-ons on his Ducati in favour of standard footrests/gear change pedal/rear brake pedal, and a set of shallow riser bars. What he ended up with was a bike that still looked amazing and went indecently fast for a 350cc single, but it was also really comfy to ride over long periods.
Maybe Enfield could offer a 'kit' to convert the GT into more of a traditional (grand) tourer. It should have everything you need to revert the foot rests and controls to a more standard posture, and what ever is required to replicate the handlebar height of e.g a G5. It puts me in mind of the kits that Hitchcock offers to convert UCE's to trail bikes / hard tails / cafe racers.
Folk might say, why not just get a G5/B5/C5? But the GT had got the more rigid twin loop frame, uprated forks, rear disk brake, a (slightly) more powerful engine, and a great looking petrol tank! I reckon that such a machine might take over the slot in the range currently occupied by the G5 (Electra). It would still leave the Classic and B5 however, as each of those models has its own adherents.