the thing is with the merc cost it affects the new players wether they will learn the game mechanics and maps
if all the mercs are lowered into 30.000 new player might consider playing mercs like fragger or kira as starter mercs and more likely to learn the maps.
if all merc cost are upped into 50.000 new players might leave early but it also save them from playing bad vassilli early on their learning period.
this is my opinion please state your reason