Seriously, how much of an improvement over the M4/M16 could the G36 be? The M4 is light, accurate, reliable, and can be augmented with all sorts of optics and NV devices. Again, what exactly is there to improve upon?
If my informal but extensive experience with HK's products is accurate, the G36 is just another overengineered and overrated euro-blaster.
As far as the OICW is concerned...I mean COME ON, already! To be effective, the shooter must shine a laser on the intended target to determine its range, press a button to set the fuse on the projectile, then aim the gun at it's proper elevation and fire.
I've never been in combat before so I know I'm speaking out of turn. But from what I understand, most shots that are made in a gunfight are hurried and unaimed. I mean, the OICW has an integral 5.56 rifle as a BACKUP. I can see it's specialized applications, but I cannot see it as a general purpose combat firearm.
Aside from designing a self-aiming rifle with little legs for it to run around on, I don't see how any convention improvements can be made over the M4/M16 family.