I liked the Scout armor from 4/5, heck I think the helmet was actually an improvement over 3's variant.
I also liked Kelly's version of the EVA helmet and Locus was pretty cool too. Scanner would look great with battle damage...can't say much for any of the others, they just don't appeal to me. (Recon, my Helmet of choice, always looked off in 4/5).
Also, I know that they aren't from 4/5 but I do like that they incorporated the Mk.IV from Halo Wars, and I'd also like to see the ODST variant from H2A.
I also liked Kelly's version of the EVA helmet and Locus was pretty cool too. Scanner would look great with battle damage...can't say much for any of the others, they just don't appeal to me. (Recon, my Helmet of choice, always looked off in 4/5).
Also, I know that they aren't from 4/5 but I do like that they incorporated the Mk.IV from Halo Wars, and I'd also like to see the ODST variant from H2A.