[Suggestion] Multi-step holding/dynamic only braking using power handle reverse rotation

[hotdamndel]

Many trains irl have power handles that can turn both ways from 0, which is holding brake on many Japanese trains (in most cases, this is not automatic and just activates dynamic braking without applying friction brakes to avoid brake pad overheat, it also tends to have multiple steps), some trains feature mixed braking when using power handle and air brakes only on brake handle. All this can't be reproduced realisically currently.