That could get really annoying in the late stages of games on Large or hudge maps where you may have 10, 20 or more planets set to stimulus all the time.

If they add it it should definatley be optional.

I'm still not sure why you want the limit on stimulus. Under what conditions are you using it short bursts like this?

Actually i would love to have an x- turn priority on projects 

for example ive just colonized a planet and set up the buildings i want but first i want 10 turns of birthing subsidies. Or ive just upgraded my fleet at a cost of x credits per turn for 25 turns and i want to set my manufacturing worlds to ecenomic stimulus for 25 turns

yes but what i mean is if i want it to be prioritized over the other projects for x turns

I would like to see an option to set a # of turns for stimulus.  If you don't set a number then its indefinite... if you set a number, in that many turns it disappears and it pops up as an idle planet.

Thoughts?