Pros
SIL is a "family" organization. The organization believes God comes first, then family and finally your job. There were different fringe benefits: flexibility, access to the Boutique, ability to work remotely, etc. Opposite from Corporate, the organization heavily believed in praising/worshipping God whenever, wherever! The dedication of staff is phenomenal. The average staff person has been a part of the organization since they were 18. 60% of the workforce will retire within the next 10-15 years as a result.
Cons
The cons of SIL are minimal. The main one is salary. As SIL is a non-profit, salary is not as competitive as the profit industry. Another con is many people are not eager to trust 'outsiders'. You're an Outsider if you're not a missionary nor grew up in that world.