this is a thinly disguised method of forcing people to go to level 5 and expend GC...those at level 5 or above will become more dominant and those below that level will stagnate...you can live without Quality/Effectivity Upgrade corps, but not being able to have FMU corps and having to rely on market availability will be a serious economic handicap...this in turn will discourage newer players from remaining and ultimately reduce total number of players...if you REALLY must raise the level of corp minimum level, i would suggest your strategic force corps which while important is NOT an economic necessity...very shortsighted SimCountry