New hires could be starting on the 175 sooner than originally planned. We've only had 1 bid for the 175 and it went very senior on the FO side. A month later, a CA vacancy was run, and many of those senior 175 FO (who hadn't gone to training) were awarded CA. They haven't run a bid to replace those 175 FO's and these spots could go to new hires.
This is all subject to change, and I would not recommend choosing an airline based off the type of aircraft you will be flying. But if they fill the 175 FO seats with new hires, it could be a nice QOL boost for the guys just starting out.