Thanks to JOSIAHSPARTAN for helping me think of this question. So, since Spartan-IV's have less extreme augmentations compared to Spartan-II's, and MJOLNIR GEN2 is cheaper and lighter than any MJOLNIR GEN1 variant, why has the UNSC not developed a variation of MJOLNIR that can be mass-produced for use by standard infantry? I highly doubt it's a monetary issue, and Hunt the Truth made it quite clear that resources aren't a problem, so what's stopping this from happening?