BT heat dissipation: # of SHSE/10s
BT rate of fire: 1/10s
BT heat penalties start: # of SHSE + 5
MWO heat capacity: (# of SHSE + 30) * pilot skills
MWO heat dissipation: (# of SHSE/10) * pilot skills
MWO rate of fire: 2-100/10s (about 3/10s for most weapons)
MWO heat penalties start: (# of SHSE + 30) * pilot skills
*SHSE = Single Heat Sink Equivalents; one Double Heat Sink is 1.4 or 2.0 SHSE.
There's three big issues with the MWO heat system that comes to light when you look at the numbers above, and sadly those three big issues take away a lot of the BattleTech Universe feeling from MWO, making it more of a Big Stompy Robots game than it really needs to be. Heat in the BattleTech Universe should be a constant worry for a MechWarrior, it should be something that constantly affects how you handle your 'mech, and it should be more than just fearing a shutdown, which is all it amounts to currently.
The first issue is the dissipation/rate of fire disparity. MWO, for good reasons probably, increased rate of fire by about a factor of three. However, it did not increase the heat dissipation at all, meaning 'mechs run three times hotter in MWO than they did in BT. This has lots of secondary effects, like the balance between energy and ballistic weapons going out the window, but that is for another thread.
The second issue is that the capacity is higher in MWO than in BT. It's not as big a difference as some people make it out to be, but it's still quite significant. The difference comes from the pilot skills, and they total 20% on fully elited 'mech. This means that a 'mech that in BT would have a capacity of 50 in MWO has a capacity of 60. A 'mech that would have a capacity of 60 in BT has a capacity of 72 in MWO.
The third, and perhaps biggest, issue is that MWO has zero heat penalties for being anywhere under 100% heat capacity, whereas BT has a slowly increasing scale of heat penalties that start much earlier: For a 'mech with 10 DHS and a capacity of 50 heat, the penalties started at 25 heat, or 50%; for a 'mech with 15 DHS and a capacity of 60, the penalties started at 35 heat, or 58.3%.
As far as I can see, there's nothing inherently difficult or problematic when it comes to implementing BT-style heat penalties in MWO; in fact, most of the mechanics are already in the game:
- Movement penalties: You've shown that you can dynamically restrict the top speed of a 'mech when it gets legged, a similar mechanic could be used to dynamically affect the speed of a 'mech due to heat.
- Attack penalties: You've shown that you can dynamically restrict aiming when using jump jets, a similar mechanic could be used to dynamically affect the aiming of a 'mech due to heat, as well as other HUD effects (flickering, static, etc).
- Shutdowns: Should also be easy enough to trigger with a "Shutdown imminent" warning and a 1-2 second grace period to enable manual override. Overriding a shutdown should risk ammo explosions (see below)
- Ammo explosions: Should be easy enough to trigger, but due to their destructive nature should perhaps only have a chance to be triggered if the pilot overrides shutdown. The chance of a shutdown should increase the higher the heat of the 'mech (starting with a 10% chance and ending with a 55% chance matches the BT heat scale rather nicely).
I believe the game would be much better - more interesting, more dramatic, more fun - if we had BT-style heat penalties starting at about the same heat level as they did in BT.
What do you think?