Pros
On the individual scale, working for Elite is immensely rewarding, as you are typically working with bright motivated students and very passionate parents who are interested in maximizing their child's opportunities. The working environment is very branch-dependent, but a good BD will allow for an excellent working environment. The relationships developed with students is often life-long and individual teachers/counselors can make huge differences in the lives of many students.
Cons
On the corporate level, Elite is ridden with inefficiency, unethical behavior, and outright greed/corruption. Virtually all staff at their headquarters are interrelated and nepotism reigns supreme. Very frequently familial connections trump actual efficiency in hiring, vendor contracts, and overall management. Additionally, lots of time and dollars are wasted chasing ideas just because someone "important" decided it was a good idea (e.g. personality testing and student records management). One very strong point is that it is very difficult being a non-Korean employee. Virtually all of the Branch Directors are Korean (~4% are non-asian, with the overwhelming majority being Koreans, often friends/relatives of the executive board). The company unashamedly caters to Korean students specifically despite their being a minority of students in a wide variety of locations (frequently being ~30% of the student demographic). Upper management at many branches often give Korean students special consideration in class placement and discounts. Many branches are staffed with exclusively Koreans for front desk and management, with teachers being the only non-Koreans. The executive board (specifically the CEO and COO) is very inefficient and will often make very emotionally charged decisions, often against the interest of themselves, their company, and their employees. Often these decisions are made with ego and power in mind; the executive board has shut down profitable satellite branches because they feel individual BDs are gaining too much "control". They have also been in the middle of their fair share of scandals of an extremely wide variety, though I have been advised against mentioning them here (for legal reasons).