The goal would be to target certain OAer's who may not be good enough for ELC's but could still have the potential to develop into good AHLers or even NHLers if given a chance and some developmental time. For example, Mason Marchment came in, played in the ECHL last year, is playing in the AHL this year and actually could earn an ELC. He may be part of the reason why Kerby Rychel was expendable. It may not seem significant in the long run, but you may get the odd NHLer here or there, or get a lot of good role players in the AHL who may be able to save you a few contracts and have a strong familiarity with the system to teach new, more important prospects, that journeymen coming in for a few years may not have.
Byron Froese turned from an ECHLer to our 4C for a full year. He's nothing super special, essentially a AAAA player, but he has 100 games of NHL experience under his belt now. Justin Holl was another one and has helped so many of our good young defensive prospects, including Dermott, acclimate to the AHL. Look at where Dermott is now? Some argue Holl should be in the NHL right now.
It may be a good opportunity for guys like Korostelev who has a ton of potential but lost some years due to injury. Maybe he's not worth an ELC just yet, but having him still around and essentially treated like a legit prospect could help him put things together. Then you not only get a valuable prospect out of essentially nothing, but you get a guy who can be fast-tracked more than a typical UFA since he has familiarity with the system.
In today's NHL, getting any sort of edge, whether it is finding cheap depth, valuable mentors or saving contracts, helps you in the big picture.