Already is kinda, it runs like crap compared to engines these days, and there's so many hardcoded limitations.
But still, there's so much more that could be done with the H1 engine. I'd like to see more creative weapons, all I really see are weapons based on real-life weapons or other weapons in the Halo universe. I honestly can't believe I'm the only guy who attempted an accurate Shock Rifle.
I'd imagine people would be trying to convert Quake weapons, Marathon weapons, Doom weapons, all that crazy shit. There's so many posibilities of what you can do with projectiles. Have a projectile explode into another projectile, which releases a crap load of other projectiles. Shit like that, outside of the box.
Sorry for trailing off, just some thoughts, lolz
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