I think the first thing the devs need to do to model JJ performance accurately is set JJs to automatically launch mechs at approximatly 40 degs resulting in a landing point 30m down range using standard gravity per unit(standard trajectory). The JJ burn time should be based on time required to reach the apex of the 30m trajectory. The JJs will exhaust their fuel, but recharge fast enough to provide braking for a standard trajectory...mean pilots doing pure vertices jumps or some variation other than a standard trajectory jump, will need to come off the jets as appropriate before they exhaust their fuel in order to insure there enough to soften the landing.
Using this acceleration profile for JJs, you can use standard gravity to impact jumps at other than 40 deg, like pure vertical jumps, which should result jump heights of about 40% max distance. This could result in 75m jump height, which puts us back into pop-tart land.
So to deminished pop-tarting as apparently desired by the devs, I say we need two JJ jump styles. Slow speed, long burn time for heavies and above. High speed and short burn time for mediums and below. This would mean heavier mechs would vertical burn slow, so they'd pop-tart slow.
This also means heavies would have a modified standard trajectory for jumps. In this case, the JJs would burn at full power to the apex of the standard jump, but then kick into a lower power burn to ease the heavier mechs through the trajectory to landing. The lower burn wouldn't be sufficient to keep the mech aloft, only to slow its descent safely from the apex of the standard trajectory. So while lights will get a kick in the pants for their jumps, heavies will sort of float. The float would be much slower than lighter mech jumps, but still faster than typical heavy and assault walk speeds, and a much faster alternative to crossing rough terrain at reduced walking speeds.
One aspect of the heavy JJ style, would be the low power burn for descent would keep the mech shaking through the whole jump, unless the pilot choose a period of free fall.
In addition, the low power burn stage could be provided for lighter mechs also. This way, all mechs could do a standard trajectory jump and just hold the JJ button for an auto soft landing...assuming the landing point is approximately the same elevation has the launch point.
Edited by CocoaJin, 27 July 2014 - 09:26 PM.