I wouldn't mind if they were removed, because playing against 2 snipers, 2 rocketeers, a railgunner, a feul rod guy, and a binary rifle user all at the same time is quite annoying. (slight overexaggeration)
Really though, personal ordnances are the last luck-related thing that hasn't been removed from FC. Sure, it "adds some flavor" to the games, but I remember still having fun back in Halo 3 even without personal ordnances If many are for it, we could compromise by limiting it to Slayer-only like Matchmaking does, or removing it from the "Heavy" gametypes or something.
If it were to get removed, the static weapon spawns need to be changed to 3-minute timers. Just saying.
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