after a few years watching people shooting in the "disabled position"(terrible name imho) at national,regional & club level. most peoples shooting position differs little from their normal sitting position.
so introducing sitting class with standing lanes, i think is the way forward.
remember getting up and down 25 times will be also uncomfortable!
remember we shoot in the countryside and there are trip and uneven ground hazards too.
could be a positive step to open the doors to new people in the sport & eliminate a grey area to make it fair to all in open class.
hope i have not offended anyone "usually do when i open me big gob" i will be probably shooting sitting myself in the next ten years................