Here's my private take on Azure:
What will it gives us (or any other currencies)?
nothing, most of currencies that are on azure, are basically docker replacement for MS-centric people.
(that's actually what most scripts do, boot linux, run docker scripts)
I think except for ETH, NONE of them actually allows creating OWN chain, and even in case of ETH, it's not as easy as few clicks...
There is also one BIG DOWNSIDE of listing it there regarding rights, but I think rockhead will have more to tell about it.
The only possible benefit i could've seen from Azure is exposure. It's not a good deal from what i can see.