The launch menu is exclusive DeusExe is why. It uses launch by hanfling, because it has a better history of running with large mods. That being said, if you run the default executable at least once (to generate a proper ini from the default, which DeusExe cannot do on its own), you can replace VMDSim.Exe with a renamed DeusExe and launch it from that instead.
Mouse acceleration fix is queued up to be included in phase 2's release, because man that crap is not consistent between machines and settings.
Hanfling also made an edited DLL for it you can find here:
Coding.hanfling.de
You'll install that to DeusEx\System directory, and it should work for VMD. HUD scaling is otherwise controlled by resolution in fullscreen gameplay. UI scaling is not consistent based on resolution, though, some higher resos (such as 1920x1080) have abnormally large HUD due to the math involved with vanilla UI scaling. Stepping down to 1600x900 seems to work well for me.
WCCC
White joined
A child growing up to become a man| Runs into battle, always a plan| And he feels he's losing his mind| Every fight demands another, gear to grind| It all seems insane, a blitz of a fight| As an enemy is conquered, he proves his might He lays upon a hill of those shot and killed| Some pass it off, some say he is skilled| He wipes the sweat off his brow, the blood off his blade| Time has passed and its been another day| As he feels he is stronger, the journey is not at end| He loads a gun and rushes in, patience low with wounds to mend| As dusk turns to dawn he stops to rest| Yet always more to do, to win, to beat and best| His rest is short and his return is swift| A guardian back to squander his gifts|