If you won't get into trouble for rooting it, then I say root it and go with an all out custom ROM. I removed all the bloat I could and my device wasn't nearly as fast as it is now running GummyJAR. I'm talking this is night and day performance difference. The devs are awesome, they know what the hell they are doing, and their custom ROMs kick the shit out of Motorola's lame attempt. Your device will be just as fast, and then some as any iPhone, Blackberry, HTC device, Samsung.... any of them. The DX flat out flies on a custom ROM. I just started experimenting about a month ago and now I'm scratching my head in wonder why I waited so long... why I wasted to much time.
But if you aren't aloud to root it, then I'd say it's not worth your job to do so. What I would suggest in that case is asking them if they would let you buy your own device so you could do with it as you wish, and just let them pick up the monthly bill (p.s. tell them the monthly bill will be cheaper because you'll be able to wifi tether for free, etc...).
If they don't go for that, then just deal with a stock device I suppose.