Would like to see a Sequential Gearbox upgrade on stock drivetrain cars.
E.g. make the upgrade add a couple of PI points due to faster shifting times of said upgrade.
On stock Subarus & Evos for example, even with the racing box & clutch upgrades they still have slow shift times. If you RWD swapped an Evo or Impreza or AWD swapped an MX-5 or a Civic, the shift times would be instant.
A few people I know (including myself) drive on automatic when racing & the slow shifts does hamper performance, compared to someone on manual with clutch.