your statement rests on the assumption that india/pak as they're now would be existing if and when a sikh state comes into existence on the face of subcontinent.
the last time the sikh empire emerged was when two superpowers of marathas and abdalis annihilated each other in the battle of panipat and the power vacuum thus left was soon filled by the rising sikh misls.
I can imagine the controversy between Sikhs themselves regarding what type of nation a hypothetical Sikh country should be. Ethno-state or secular? The hardcore will predictably want something akin to a Sikh North Korea, while the far-left Twitter poseurs will be angling for gay-pride parades and trans-Anand Karajs.
Let's not be under misapprehensions: from day one India and Pakistan will dedicate a significant portion of their defence budgets to destabilise a Sikh state. They will throw everything they have at it. We'll need our brightest and our best to counteract it all. 😀