I'm assuming the lack-of-pause thing is because of its dual SP/MP remit, but I'd also like the game to pause when I'd like it to pause. Then again, I'd also like games to not use 100% CPU/GPU when I'm alt-tabbed but most modern ones do.
FWIW, the games I have found that do this, tend to behave much better if you put them in windowed-full screen instead of exclusive full screen.
I think it's called "fake fullscreen" or something like that in the options for DOS2.
it cuts down cpu utilization by 20% on my machine if you take the game out of exclusive fullscreen mode.