Hi!
I think a player should be able to go for a more mobile war, even in the west.
The german advance was hold of trough many circumstances.
And the later developed tactics showed that is shouldn't have had a stalemate forever..
(Actually it was not 4 years long a stalemate..)
Guerilla warfare in Afrika anyone? What did the Brits had to put up against that small numbers of german forces?
And of course the other already mentioned places..
The diplomatic evolvement could differ. Germany was not "evil" like in ww2..
Sea Warfare, many different outcome possible.
What if another Jüland happend with bigger losses to the Home Fleet?
A possible German breaktrough in the Atlantik with more cruisers..
Also, don't forget, the french were also at the breaking point. High desertions resultet in drumhead court-martials to keep dicipline..
It is often forgotten what the impact of the US support was... Not only in troops..
So many many space for interesting "what if's"...
Oh, and for HOI3 there are also WW1 sceanrios in development...somekind..
Kind regards,
Chromos