Yes, that would make it easier, however, I designed it to fit on small printers as thats what I have. The problem with making one larger part is I can't print it to test if it will print ok. The mounting parts for the electronics can't be scaled the same way. So any scaling I do involves redesigning nearly the whole helmet. I am currently working on building a larger printer.
I do plan on updating this design with larger parts and making the mounts something that can be added on after parts are printed. That way the helmet can be scaled to your hearts desire and ad the mounts where you want them. This would add to the complexity of the assembly.