A min maxer would do this in the blink of an eye is the point. You can only run a limited number of extremely light missions, this is a bonus experience that you would otherwise not get: i.e. you would be ahead of the curve.This is pretty accurate, but here's the thing- you know how you referred to your insane team of badasses gaining one level? If you had a 5-man team, you could kill 200 enemies and Wet Work might not even give you a level... if the kills were equally spread around, with 40 kills per man, they would each get experience equivalent to running 1 2-man stealth mission. IIRC the doom reinforcements timer on Veteren is ~12 turns after completing the objective, so you get maybe 6 pods dropping before the doom reinforcements start, and frankly I'm not sure any squad can indefinitely hold the doom pods off. Optimistically that's 36 reinforcements before doom reinforcements- and again, you'd need over 200 for Wet Work to give you one Extremely Light stealth mission worth of exp.
You may feel this is not overall worth the endeavor, but the point I'm trying to make is that a min maxer would take the opportunity to, and that if you increase wet work any further, it only encourages farming reinforcements, which we don't want.