RS is awesome. It's very realistic and brilliant IMHO with the control scheme (the pace, cover system).
I just can't put in words how great it'd be if Rising Storm as it is had a upgrade (or was indeed *made from scratch?) in the theme of the modern military of this day and age. If it could be made either through mod or devoted development I think this would had some moderate if not greater success for there might be a moderate amount of interested buyers... I assume.
Just like it was with COD, when it got the modern military theme it's success was and still is to some extent unrivaled.
This idea of an upgrade has nothing to do with COD though, except the admiration towards this game's engine and realism and intensity of RS. Which as mentioned is very realistic and fun, when you L2@P.
In a modern military setting with world's different terrain, from mountains dense jungle and urban city environments, with the m4's m16's gk36's ACOG'S etc... it would be unrivaled fun IMO.
Rising Storm is unique in the tactical FPS gere, but it's setting is "antient" (with all due respect, to whom respect is due to).