I dislike light 3rd seat minor openings (no preempt value for an upside and no drury to slow partner down for a downside). But then, I would not have the obstacle of Flannery to overcome (a weak 2D bid stands out - shame we have ruled it out).

 

With better spot cards in the suit or different vul, I would consider 3D. At MP scoring, I find more favor to a 1D call (only because I cannot bid 2D).

 

Under the stated conditions, I would simply pass. I may regret that, but I want my partner's to remain aggressive. If they fear that I may hold this for a 3rd seat 1D call, they will be forced to not be aggressive.

With a few of my partners I would not hesitate to bid 1D, our 3rd seat openings are light.  With others I would pass.  It's a matter of style and partnership agreements, pretty much what Bill said.

1D  is fine with me.

1D, no question