Goals are often in near direct opposition to each other. Basically a "please grow sales, while reducing inventory, and oh yeah- double the margin too" type stuff. Priorities would change drastically. Customers invariably see this disjointed approach.
Management varied wildly from "great" some guys I considered mentors, to "awful"- I would be amazed some people could get a job at Subway. Towards the end of my M+M career, staff was slashed to literally bare bones levels. I understood why, but it really taxed those who were left to do the work of multiple people.
I do think there is a disadvantage for US born employees. Not to say it is impossible to move up, but it is distinctly harder.
Some very poor levels of micromangement- particularly of outside sales. At one point I had a territory over 10MM annually, but would get 7:00 am phone calls that were blatantly a "I want to make sure he is up and out there" under some other lame pretense. No offense- if reps are getting it done, let them be. Don't nag them when they have a 10MM territory, with zero commission. I assure you, they have plenty of work without the interruptions.
Work/life balance can be a challenge- especially when salary is not particularly impressive given the time/effort.