Extracting the gameplay code

What about extracting the Doom gameplay code modules into an easier to edit engine like QuakeC but for Doom? That could change the whole view on modability - no more definition files and huge freedom.

Vavoom does it - but what makes you think that things get easier by that?

You can modify anything (except graphics) in a single system. You can completely change stuff this way without asking developers to add new features; you can add them yourself.

Yeah, but you also need to be able to code.

That will only work if the system is sufficiently modular. Otherwise you are in the same situation as now: One change and you are cut off from all future enhancements.

In Doom3 they got the best of both worlds.

You can edit the SDK and create pretty much anything you want, but the entire game's entities are scripted and can be modified on the fly.

Didn't make the game better though...