If such a thing could be developed, AND it could easily be repaired from the outside - it would be a clear winner
As for those never having had a puncture, you are lucky, and live in "easy" kitespots.
Most of us have thorn bushes and something even worse (YES, that exist too - bushes that are cut down to the ground so you dont see anything - but all the sharp thorns are still there fixed on the ground roots
So having punctures is part of the game, get used to it
A kite that could be repaired easily from the outside - GENIUS
Although - I dont have any clue how that could be made....
Punctures happens so rare, that it is not a problem as such - but if it could be easier repaired - it would be awesome.