Some of you may hate me for this, but i think auto ranks should be entirely removed.
I remember the chunin exams for being funny and entertaining, when like 15-20 genins join and there are serious fights going on in FoD. Now player just think "lulz lvl 40 auto chunin, gg". It'd also beneficial, since you get exp for passing the exams and you get C ranks (after genins) and B ranks (after chunins) waaaaay earlier. If u just get the auto rank, you end up with a freaking bee nest burning at lvl 55 and wonder why.
Atleast take it in consideration.