Canon (and MWO) SHS:
1 heat per ton
1 heat per crit
Canon DHS:
2 heat per ton
0.67 heat per crit
MWO DHS:
1.4 heat per ton
0.47 heat per crit
I submit that 0.67 was closer to the "right" value for heat per crit for DHS, even if 1.4 is the right value for heat per ton. This provides a good trade off between SHS and DHS. The space has a lot of problems:
1. Nerfing the heat per ton suggests that you should leave the players the option to spend more tons for more heat dissipation if they want. However, preventing mounting them in the CT or legs is too restrictive to allow this. I think blocking the CT and legs was a compelling trade off with DHS at the 2.0 level (or somewhere close to that) but not at 1.4.
2. For almost every build I have looked at, it's impossible to use DHS in combination with any of: XL engine, Ferro Fibrous, or Endo Steel, just because DHS are so crit space intensive. Most builds I make come down to a trade off between running DHS vs. running SHS and an XL engine, and the heat dissipation is almost identical between the two (usually a hair more for the DHS case, which is at least something). Then if I try to run an XL engine and DHS to get even better, I simply can't. I run out of crits long before tonnage. FF and Endo are worse still.
The one exception to this rule are low heat designs that can get most/all of the heat dissipation they need from the engine-mounted heat sinks alone (and of course run a 250 engine or larger).
I think it's bad to have it be a choice between DHS and { everything else }. DHS should be able to be meaningfully combined with at least one of the other upgrades in most designs, possibly excepting crit-strapped assault mechs.
3. For mechs mounting engines significantly smaller than 250, they are really getting hammered big time. Now you're forcing them to spend 3 crits per 1.4 heat whether they like it or not.
If MWO DHS were made to take 2 crits, that is 0.7 heat per crit, which is almost exactly the canon heat per crit value of DHS.
Edited by Joehunk, 07 November 2012 - 10:56 AM.