We are first time DIYers on our hardwood floor. We are half way through our master bedroom and realized that the joists are perpendicular to all the other joists in the house. The master bedroom floors are therefore running parallel to the joists. If we were to run the wood in the other direction, it would be going perpendicular to all the other wood floors on the 2nd floor. I would REALLY like to avoid ripping it up I know this is a "problem" but how big of a problem? What could specifically happen if we just keep going?

Some additional info:
Laying 3/4" oak flooring (2.25") over what appears to be 5/8" plywood subfloor. Joists are 16" OC. Home was built in '93

Thank you!

Subfloor actually says 23/32"

It can be done of course, but you may experience deflection or movement in areas between joists, which can lead to squeaks and creaks. Depending on flatness of the subfloor, you may notice the joists telegraphing through to the floor which may lead to gaps in the hardwood along the length of the joist.

Glue assist may help a bit here. Also, since its the master bedroom, traffic is limited by furniture, however you may not want to wake up to a squeaking floor every morning.