I really like usage of the map and silly goblin doodles!
Let me push the mechanics even further (not sorry for unwanted suggestions):
With usage of graphics, you could bring even more mechanics only by drawing e.g. three wound boxes to each goblin and rewriting the success mechanic to use d6:
We: observe → plan → succeed on 6 (d6 + necessary wounds). Sacrifice to succeed instantly.
You can even draw an arrow from _wounds_ word and point at the checkboxes to make it clear what they represent.
You can even draw different amount of checkboxes to various goblins to differentiate them even more!
With changes like this you have even more robust (if we may say so) mechanic that is not based only on discussion but brings randomness and prolongs life of the goblins. Introducing difficulty is not necessary as it only strenghtens the wild nature of goblins - they may succeed in heroic tasks while fail completely in mundane activities.
Ok, those are my two cents here. You inspired me to add the map to my game Passage - Now, I need to draw some maps…