I'm shooting PO here in Australia we had 6 competitors at our Nationals in April ( it took 6 months for the rules to be officially announced ) so a slow uptake but we have only had a bout that number shooting our local and our L3 State matches as well. So I'm not sure if Light will make any difference.
Our problem is mainly availability of OR guns, pretty small market and some silly regs as well IE: minimum barrel length of 120mm and 10 round mags only.