Chocks, not terrible interesting. Stability versus a fast upgrade are 2 completely different issues here.
If someone is hired as an FO they will be placed on the bottom of the seniority list. They will NOT be upgrading after 1000 hrs of line time nor 3 years.
Ask the qualified FO's that were hired back in 2005. They are still sitting in the right seat almost 10 years later.
An upgrade is possible with the business jets but don't expect it to be under a decade with the regular line operations. If guys are coming to SVA with the hopes of a fast upgrade it really is not in the cards.