A future (but futile obviously) Winter Olympics bid?
There's mountains near Ashgabat, but do they receive enough snow? Are there even existing ski resorts? Do they have a mountain with 800 m vertical? Naturally, if undeveloped they can develop such things.
You got all the arenas there:
Winter Sports Complex - 10,000 - Ice Hockey I
15,000 Seater Arena - 15,000 - Figure skating/Short Track
5,000 Seater Arena - Curling
Velodrome - 6,000 - Ice Hockey II
Any one of the city's new stadiums with an athletics track could be modified to become indoor and house a temporary speed skating oval.
As for accommodation, you could say give a figure of less than 5,000 rooms currently, with an additional 12,000 or so rooms with that new athlete accommodation and other serviced apartments. Then you fill the rest with proposed accommodation, universities and the like.
A long shot to win obviously, but given all this "needless" development, surely you would want to avoid white elephants by trying to get other major sporting events too. Maybe an Asian Winter Games would be a good start.