A couple more facts...

AMA flyers do not need FAI flyers to develop any new technology to take advantage of an increased weight allowance. More powerful motors, lipos, and ESCs already exist that are drop in replacements (or require minimal modifications).

Plenty of flyers are currently competing at the local level at >5kg, and increasing the weight limit would have no effect on them.

Competition grade equipment costs more money than casual equipment. The larger, heavier, and more powerful the competition grade equipment is, the more it costs (and the same is true for micro....where the increasing smaller stuff costs more).

Regards,

Dave Lockhart