what I meant was I have a mod installed that makes braking research infinite and thus if you get greedy with speed you lose controllability of the trains in their schedules (I.E. lockups in blocks become more frequent because if the train needs longer to slow down it negates throughput of other trains)
for values could each have their own and could cause drawbacks on other values a basic example could be speed causing something like the default plus a percentage but will also raise the fuel use (P.S. I'm not sure if this is quite possible but would be a very balanced prospect)
