lightweight is the wrong name anyway.
We should call it IR-league and vision-league.
We (Teams from Bohlebots) do not need an increase of the weight limit, but we are fine with any limit.
But keep in mind that we need some differences between the leagues. If we reduce the ball size to golf ball size in “IR-League fka lightweigt” the two leagues are getting very close as most of the teams use cameras to spot the goals anyway.