Personally I’d see that as a positive - better atmosphere having both fans in one stand , much better view / facilities and hence potentially a bigger away support .
Even if Killie brought say 2k fans we’d still have scope for c6 k between the JHS and JLS which is plenty .
Taking away the location and day oot in Glasgae reasons ……if solely based on the matchday experience I’m not sure I’d be rushing to Firhill as an away fan …..even though you get a day at the beach thrown in for free these days