Upgrades come for two reasons. Growth and attrition.

We have 0 published growth on the crj.
There is some growth on the erj but we are rapidly running out of new aircraft to come on property.

Pending a new announcement of aircraft, upgrades will soon translation to attrition coverage. So any pilot just now coming onto property can expect to be an fo for awhile.

All that changes if new aircraft get announced. Also keep in mind there is a large pool of fo's who have been passed over for ca due to lack of time. They are gaining the time every day. All these captains that are upgrading at the yearish mark that are bypassing all these FOs can expect to be in reserve for a long time as all the bypassed fo's will be above them when they upgrade.