i know everyone is fuming over the origenal creators idea of a backlash to removing a sapper, so going with his original idea a little bit here are my stats

+sapper explodes on removal
+building explosion deals amplified explosive damage if building is sucsessfully sapped
+works properly in mvm. (since, you know, the tape recorder and normal sapper don't.)

-25% vs players
+150% self damage to sapper applicant when exploded
-25% sapping damage
-25 max hp on user