special power up: mainly because it makes ink armor activate quicker, which i find useful since i'm usually in the front lines.
ink saver sub: suction bombs are useful, but are ink hogs.
run & swim speed: mobility is important to me for most, if not all, my weapons. the n-zap is speedy already, but hey. never hurts to be faster.
ink recovery: get back to shooting faster or throw more suction bombs sooner.
probably will end up replacing that ink saver main chunk.