Skins are great but need to have a reason for use if CCP expects the skins to earn ISK on the market.
Skins should have the following bonuses: Just a few examples.
2% bonus to locking speed
2% bonus to shield or armor HP
2% bonus to shield or armor resistance in a specific type or 1% across the entire resistance base
3% bonus to mwd or ab velocity
-3% bonus to inertia
-2% bonus to drone damage received
3% bonus to ECM, Sensor Dampeners, Target Distruptors and Target Painters effectiveness
2% bonus to ship warp speed
-3% bonus to incoming damage received from thermal, explosive, kinetic or EM based ammo types.
-2% bonus to incoming damage received from thermal, explosive, kinetic and EM based ammo types.
+3% hull hit points
-5% to repair speed and +5 to repair amount of ancillary based repair modules
+4% to capacitor recharge amount per cycle
-5% to smart bomb damage received for kinetic, explosive, EM or thermal
+5% for all hull resistances