PVL forcing Perth to take on the Bears would inevitably end in tears.
The only reason you'd do it is to appeal to the boomer audience in Sydney, but the question is, or rather should be, who should be the target audience be if the goal is to build the most successful Perth side possible; the people of Perth/WA or boomers from literally the other side of the country?
If WA/Perth has any pride they'll tell the NRL f**k off if they try to force the issue on the Bears. Don't degrade yourselves out of desperation, if the NRL refuses to treat you with respect take you money elsewhere. You'll be happier in the long run.