Firefight's supposed to be a challenge right? You couldn't reload the power weapons you got from supply drops in Reach or off enemies in 3. Its just in keeping with the spirit of Firefight IMO.
Maybe in Heroic it could work, come to think of it. But no Mythic.
You shouldn't compare Halo 5's Warzone Firefight to older versions of firefight. They are wildly different game modes. I'm sure that if Halo Reach's firefight let players call in vehicles, those vehicles would massively
outclass any weapons they could have called in, if those weapons had limited ammo. Which is precisely the problem that I'm trying to bring to 343's attention.
Making req stations refill power weapon ammo in Halo 5's Warzone Firefight would not take away any of its challenge. As I said, it still wouldn't put weapons on par with vehicles because #1 using weapons would still most likely get you killed, especially on higher difficulties and #2 you would need to stick close to a req station in order to have infinite ammo, which vehicles don't need to do. The challenge of firefight would remain the same, but it would allow more options on how to effectively take on that challenge, which would bring much more balance to Halo 5's sandbox.
Trust me on this, ok? I play lots of Warzone Firefight so I'm speaking from experience. Req weapons are currently balanced for PvP, and not PvE, or should I say Pv armies of bullet sponges. It's a different game. Take Nornfang, for instance. This is a super duper powerful badass weapon, and very dangerous in PvP. But in Warzone Firefight, you could use it to maybe kill a Knight or two before running out of ammo. And what happens then? You've already spent 7 levels of req energy, so you'll be sitting around being useless to your team during the time that it refills, while your teammates may be happily firing away in their tanks and Banshees.
It is rather outrageous that in firefight, a Nornfang costs as much as an Oni Scorpion which would allow you to deal as much damage as you want in PvE if you're careful. Warzone Firefight players have to open req packs, look at all the shiny cool weapons, and if they want to be at all effective, not use them 99.999% of the time. This is bad game design and very frustrating. I think 343 could easily solve this problem without removing any of the challenge of Warzone Firefight.