Jones isn't a good overall player, but he can be a good role player. If the Rams sign him, they aren't signing him for his pass rush prowess.
I'm saying that they align a little differently than you had it. I'm not disagreeing with your overall point, just nitpicking.
However, I'm not sold that Easley will be starting. If you look at how he did things in Denver, Brockers makes more sense as the strong side DE.(Derek Wolfe) He likes to have a bigger, more powerful guy there to protect the ILB behind him. And I expect if we use Barron as that ILB, he'll want to protect him with a bigger DL.(which means that the strong side DE will be attacking the B Gap more often)