Nameplates Scale/Size ?

Hello,

my goal is to get the distance between me and all players in a SMP server and append it to the displayname of each player kinda like "Player1 [133m]".
I got it done with a plugin i wrote but if the player is far away the nameplate get smaller. I want the Nameplate to be always the same size even if the Player is e.g 5000block away.
From what i learned so far is that i cannot change the size/scale of a nameplate with plugins because it is a protected class but a mod should do the job right ?
I spended 2 days digging into modding but i don't know how to tackle this. Do i need to loop through all players and change the coordinates of their nameplates to get them closer to me or is there any event that scale their nameplate that i can simply remove/override. Im kinda overwhelmed and could need a little help to Understand the System behind Nameplates.