
think about it,
Factory or Conbot:
100% health -> 100% buildspeed
80% health -> ~95% buildspeed
60% health -> ~65% buildspeed
40% health -> ~35% buildspeed
20% health -> ~5% buildspeed
0% health -> duh...
anyways... you get the point... consider it as a polynomial graph of the third power.. (for you eggheads like me) anyways I think it would add a neat aspect to raiding, you go though and just damage something.. and, OH NOES!!! ITS BUILDING SLOW!!! I GOTTA FIX IT!!!....
and to make it less, or more, close to a linear scale, just change the multiplier on the formula:
Y = (X-50)^(3*#)+50
(edit: ok I threw that formula out in my head on the fly, its waaay f'ed up, I'll see if I can fix it)
Where:
Y = Buildspeed
X = health amount
# = multiplier from (.3334 - 1.0)
using .3334 will be a linear graph, and 1.0 a full third power graph, put it in excell or your graphing calculator and look with a zoom from 0 - 100 on both axis.
(going less than 1/3 will cause, well, issues in the graph, and going over 1, will cause dips and more rises and stuff, so yes, 1/3 - 1 are the limitations of the function.)

it'll add a bit more "incentitive" to micro, but at the same time.. players too worried about "only damaging everything" might get hurt in the long run a- because they never kill anything, and b- spend too much time on micro and lose their base..

whadda you think?