Unless there is a downside electrically, which I haven't read yet ....I think that the only conceivable downside would be a philosophical one, along the lines of Shadorne's last comment. It could be argued that you are raising the effective cable inductance to compensate for an imperfection elsewhere in the system or the room. But given that nothing is perfect, and that the adjustment is extremely small in electrical terms, as a practical matter I don't see any issues. I would think of it simply as fine tuning the system.
Best regards,
-- Al