Your esimation of the missle launcher's effectiveness versus infantry is definitely off but I'd agree with everything else.
I do most of my killing with direct shots to the ground with the missile launcher against infantry and strategically-placed mines.
XFire id: icemanix
NF7 | MBarton 2500 200x12.5 @1.875v
OCZ3200EL 2x256+512 @11-3-3-2
eVGA 6800GT | SB Live 5.1
Antec 430 | SLK-900 @53C load
Iiyama E431S | XDreamerII @30C