Enable self-desctruction only after 10 seconds of inactivity. Reason is the following scenario, i experienced several times: You are in a one-on-one fight as your opponent recognizes that his shields are running low, he initiates self-destruction and explodes right in the heat of the battle by self-destruction stealing you the points. This is even more annoying, if your opponent has a stronger tank and you have already been killed by this guy at least once during this special fight and just working on your second chance. It feels like some kind of betrayal.

I really feel no sympathy for players who are self-destructing in one-on-one fights (battle may have more players) just to keep their kill ratio high. With the smokey, you need to hit pretty often to kill stronger tanks. Smokey is great, but 7 hits to destroy a tank is nothing unusual. Those fights may take some time, but with both sides trying, sneaking and rushing, it can be real fun. But I feel some kind of betrayal when my opponent after 6 hits decides to initiate self-destruction and run me over with a new tank.