I would really apologize to all of you for my unpolite way of expressing my opinions. I only had a bad day and I was a bit depressed so I deliberately attacked the RTR 6.0 which has no blame!
As praetorians I misred that RTR 6.0 had reintroduced them in the game, so I am also sorry for that!! Anyway I Know that the early legionares hadn't a rectangular shield and they were never used during Republican age. But I am not sure that the rapresentation of the early legionaries made by RTR 6.0 is correct. It seems that they have been a bit influenced by the Greek units! These Romans looks a bit like Greek Oplites with a longer and bigger shield!

Anyway it's only my opinion, I rather prefered the Imperial legionaries with lorica segmentata and rectangular shields.