I thought the following should be in its own thread. unfortunately is both a gear idea for manufacturers and possibly MYOG, so I have put in MYOG forum:
Perhaps a stove with solid rigid pipe would have an advantage over a flexible cable
(if don't mind always in liquid mode, even at start up)...
As the canister is always inverted (liquid mode only), it would either need primed (eg with alcohol), or lit according to this site's winter inverted operation instructions and initial flaring accepted. A pre-heat tube or similar is this needed at burner (not shown).
It could be lit outside cone (but on foil floor) then slid in.
Note stove should have no gas carrying structural/connector parts made from plastic (which might soften in use).
1) I found this smaller Camping Gaz torch which can lie on side (presumably after warm up):
so could be lit, then set on side (beside cone) to heat under pot (in cone).
It has quite a long "snout"
NB by on side I would envisage the control valve knob facing away from cone.
Unfortunately weighs 309g, but proves blow torch can run on side (if you think about it, they are hand held, so should need to be able to cope with being non-vertical
(BUT some mention flare safe as an option, so need to check)
I hope it can be lit in position shown, it would be better with control on side.
control knob would need a peg thru it as shown, with matching holes in said plastic knob. Plastic parts look cosmetic, but would need checked.
NB this idea is vapourware and only to be tried if considered as safe.