bragnouff is correct, really big LEI kites have less windrange, period.
Some of you can master such sizes to the extreme, amazing
But for the majority of riders no matter what level, the windrange is significantly smaller.
Which is why they are a very small niche, and why brands have discontinued these.
Yes they will work better now with lighter materials, but the windrange wont increase.
Not good for you loving these, I know.
There are other types of gear which is a niche I would like, but not sold/fabricated.
But so be it and it makes sense as sales are not "up for it" so to speak.