Halo fan since CE debuted, and I've played every game religiously, and I could not be happier with this armor design and the entire aesthetic/tonal shift 343 has taken. Halo looks and sounds like Halo again (at least according to Infinite's two trailers), and that's exactly what diehard fans have been clamoring for. Remains to be seen how this "spiritual reboot" perspective will inform gameplay (i.e. will they actually remove sprint, clamber, charge, etc?), but, ultimately, that's less important to me than nailing the tone and soul of Halo. Gameplay has always changed game-to-game and I'm happy to adjust - but messing with the soul of Halo isn't something you can adjust to easily.
It feels like a resurrection that has, for the most part, given the majority of fans the boost they need. There's a real chance for Halo to return to form, carve out a unique space in the gaming landscape and even bring in new players who will never know all the weird and frustrating transformations the series has undergone since the end of Halo 3. In a way I envy them! But yea, armor looks great - it's unfortunate for some that they're let down by it, but longtime fans like myself have been let down by the direction of 4/5 so it feels like our time to be happy. So let's enjoy!