What if ID started working on a DOOM3.wad?

[94's the best style]

I feel that Doom 64 is the best example out there, new linedefs, resprited monsters, new weapon(s), cool stuff that wasn't possible in original engine. Probably new enemies and a story that somewhat ties to previous games. I would expect lot of new things if it was a commercial title. 

[Capellan]

10 hours ago, KVELLER said:

 

However, Heretic and Hexen showed us that the engine is capable of doing all of those things (sans crouching) as well as removing infinite height. It's a limitation that could've been removed (or at least it seems like it).

 

The fact that all these things have subsequently been done with the engine was precisely my point :)

 

The absence of a jump command in Doom is not a bug, and I doubt anyone would argue it is, though they certainly might argue the game would improved by having one. Exactly the same applies for infinite tallness.

 

[kb1]

We already have source ports and wads that blow away anything a commercial entity could do with an idTech1-like engine. We've been hacking away at it for 25 years.