This is whay I'm against a HOI4 WW1 DLC because a modder can do it as well. You talk about tweaking the defines to simulate ww1, but why should I pay for that? If PDS wants a WW1 experience they should create a new combat mechanic. WW1 was a very important part of history, and a WW2 DLC can't do justice for it.
This is probably a personal difference thing then. If someone makes something that's fun, and puts time and effort into it (and a WW1 DLC will be a lot of time and effort, just ask Dizzle3, Ostheim or the DH team) then I'd be happy to pay for it. Hell, if PDS wanted to put corvettes into HoI4 (something I'm planning to do myself), I'd still be happy to pay for it instead of having to do it myself, even though I have no doubt I'll be able to

.
Eh, I still think DLC is the wrong way to go about it.
I understand the sentiment, but if the demand for a war game on the scale of HOI for WWI exists, then Paradox shoots themselves in the foot putting out some DLC for HOI4. They should instead just get off their... ahem... and make a full fledged WWI war game in the same tradition as HOI.
I think this cuts both ways. If they released a full-fledged game, even if it has the number of person-hours put into it as a full game, there'll be people complaining it should have been HoI4 DLC. I'd probably go the Panzer Corps: Soviet Corps route and make it stand-alone DLC, at less than full game price but more than the usual DLC (assuming that's roughly an indication of how much work it took).
Also agree that it's likely to be quicker to put together a scenario with DLC and some relatively minor engine tweaks (that could also possibly benefit gameplay in HoI4's came timeframe) than a 'full' game (presumably a 'full' WW1 game would go into more depth into the imperial brinksmanship and naval arms races (Woot!

) that took place in the lead-up to WW1 - ie, getting more into Vicky's territory), and that DLC might be better in the first instance.
However, would deffo prefer a stand alone WW1 game, were it feasible, but I think Johan is on record saying he'd never do it (although I'm not saying he couldn't change his mind).
... and call it Hearts of Mud
lolololol

.