I really like Project Runway, but good gracious why do they keep insisting on switching things up every season? First it jumped networks, then it brought back all-star contestants (I do think that was brillz), now it's losing

I really like Project Runway, but good gracious why do they keep insisting on switching things up every season? First it jumped networks, then it brought back all-star contestants (I do think that was brillz), now it's losing