My first thoughts when I saw the armour and customization was that the armour texture looks plasticky. It lacks a metallic shine or something that makes it look like metal armour. I really dislike the default helmets (I don’t know about rarer unlockables yet of course), they look like flattened versions of the originals, like scout or aviator, with all detail smoothed out and are too round. The shoulder and knees too look just like simple shapes. A Halo game that boasts more customization than any other should at least make it look good, but most of the armour just isn’t appealing.
Also - why change the colour scheme option??? Bring back the Primary, Secondary and Tertiary colouring! I like to use colours other than just the palettes they have given us. I do like the idea of having patterns like camo though, that is pretty neat, but only being able to use them in the colour schemes they are in doesn’t make it work well. One last thing about colour is this: it is very confusing playing any online game as red team and having blue coloured players on my team running around (or vice versa), since instead of uniform colour for each team, they switched to coloured outlines.