Hmm, hmm. 1-2% is acceptable. (Also, isn't bugs piling up our raison d'etre?)
In that case, I'm going to say...
No Revision. I think we'd be better off saving the dice so we can do two designs next turn, and still have one left over for a revision/strategy action.
Revise Digestive System (1) Detoxicated
Revision - Sharper Mandibles (2) Crazyabe, Puppyguard
Revision - Spikeridged Mandibles (1) Shadowclaw
Revision - Natural Fertilizers (1) strongpoint
Revision - Hunting traps (1) strongpoint
Spitter Vomitting(2): 10ebbor10, FallacyofUrist
No Revision: (1) NUKE9.13
Reasons not to do the above revisions:
-Revise Digestive System: Making the Emitics spit glue might be useful if they were at all combat capable, but they aren't, so it isn't.
-Sharper Mandibles: If it works perfectly, and the food is digested into nothing but simple sugars, it would increase combat effectiveness by 1-2%. Not enough bang for my buck.
-Spikeridged Mandibles: A)Insects don't have bones, B)See Sharper Mandibles
-Natural Fertilizers & Hunting Traps: I feel like improving our agricultural techniques from zero to anything is worthy of a design, and that a revision will have only a minimal impact- certainly less than a third of what a design would have.
-Spitter Vomiting: Sounds like it would increase Spitter's melee attack, but not do so much for their defence. It is their lack of mobility that is cited as their weakness, after all, and vomiting acid in front of you ain't gonna stop dudes dancing round you like a godsdamned maypole.