[Hitman]

Jeff you have raised one of the most important points ever here. So many years we have been following the inertia and ignoring how the snowball became ever bigger while rolling. There is no doubt the 3D part is a huge hit for our processors - having gone to much more modern PCs since 2005 has masked it but still on old game engines like SH3 becomes noticeable. Yes, shared resources in the 3D part are key to solve many problems but we have a formidable number of scattered units around, some in super mods, others in single unit mods/addons

Therefore the best way to do an optimization that works for everyone would probably be to list the units and proceed in a collaborative effort to slowly make our way through it. I guess that IABL merchant fleet mod is one of the most spread around mods, but I have no idea if he already did that optimization.