rent stabilized q's

1. Hasn't filed in 3 years.  Why?
2. Unit 6.
3. Ned Eisenberg strategy
4. Unit 8. Rod McLucas. Why is preferential rent so close to legal rent?  What is the point?
5. Who has preferential rent for duration of tenancy?
6. Has owner requested or have tenant supplied notice of family members?
7. Owner improvements. Until paid?
8. Cost of living increases? Or expenses increases? In leases?