I recently received a bug report from someone that my plugin "crashed the server". As it turned out however, the server was simply overloaded with entities (in this case, Minecarts) out of control of my plugin.

I would love to see the server report on the number of entities during a server freeze; or perhaps; only do so when the entity tick time exceeds a threshold or when a certain number of entities exist. In more detail, it would be nice to see a message like this:

There are 10052 entities on the server (of which 99% are in world World2, 99% are entity type 'Minecart')