ESF has been developed for fair play, and there is a very good reason the team never implemented the option of letting the server admin changing the start PL. The reason is that we want people to start at the normal PL value and let people earn their way up to ascending levels. You have no idea how easy it is code-wise to alter your PL if you have access to the original source code, infact all the inteams of the game have a CVAR for changing the PL at any time for "testing" purposes. But we always make it a point to remove this CVAR before releasing, for the purpose stated above.
The ESF Team will not entertain the use of any script, hack or AMX-plugin which allows server admins to freely change the starting or normal PL. We let EEA/EVM slip by because they are actually complex plugins and change many more things in the game. Even then, we don't identify EEA/EVM as plugins even close to official, we don't even support them on these boards.