Would it be net positive or negative if Promote minion chased champions fighting nearby?

Suppose it has the following priorities against any champion within 2000 range:

1 -> Chase and attack the target the user attacks. 2 -> Chase and attack the target attacking the user. 3. -> Chase and attack the target a none user ally attacks. 4. -> Chase and attack the target attacking a none user ally. 5. -> If no champion within 2000 range, return to the nearest lane and start marching to the enemy base like a good little minion.