So, got to reading this whole thread...
Like many, I'm happy they are doing something productive with WoL. Overall sounds like a good addition. WDW benefits from these indoor experiences with different options. Not everything needs to be an E-ticket and this can help round out the park better and fill in gaps in a day. I agree with others who pointed out that that side of the park will be more thrilling rides with height restrictions (though the mild side of M:S isn't that bad) so counter balancing that is nice. That said....
The lack of one bigger attraction/ride seems kinda disappointing. The Body Wars show building is there, attached and could be repurposed into some sort of ride if there was a will. I suppose someday something more substantial could still be added, but that rarely seems to happen.
I do like that they are putting in food service. A quick serve of some sort certainly will help.
However, a good argument, I think, is why couldn't they just use Innoventions for this? It seems like West is being torn down, so isn't think kind of robbing Peter to pay Paul? While I'm optimistic this will be a higher quality than the more recent efforts or Innoventions, it doesn't strike me as that drastically different in execution.