Don't know about the Rams, but the players that intrigue me the most for this team are:
Mike Williams, TE/OT, Lions (Alabama)
College TE the Lions switched OT. A very strong blocker coming out of college, at 6-6, 270+ pounds, Williams is about the same size as and could play a Jason Dunn (KC-Vermiel/Saunders) role at TE for the Rams. Practice Squad.
Max Bullough, ILB, Texans (Michigan State)
Here's an UDFA who the Rams brought in pre-draft. He's a throw-back 2-down LB with good size 6'3, 250 who is said to have good instincts, is a good tackler, and will actually take on instead of run around blocks. Wish he were faster, but his instincts and physicality could make up for that shortcoming. IMO, he could really help the defense and special teams, IMO. Active Roster.
Gerald Rivers, DE, Jaguars (Ole Miss)
Last year's training camp DE star just got released by the Jaguars. I'm in the minority that liked the 2013 Rivers over the 2014 Sam as he can play and has more potential at RE. Practice squad.
Terrelle Pryor, QB, Seahawks (Ohio State)
I'm a firm believer that Mike Holmgren's philosophy that backup QB(s) should be able to do something with their feet since they get so few reps during the week is right on the money. Sure, he'd have to play special teams but, I'd hope that a kid this big and fast can be used in a Tebow like package on this team. He could be Schottenhiemer's Brad Smith Wildcat option. Active Roster.
Others:
DeAndre Coleman, DT, Jaguars (California)
John "The Terminator" Conner, FB, Giants