Some of those are very major, though, and I think the word "restriction" is a bit misleading. Having 5 invulnerable couriers is not really a "restriction" in that it limits or simplifies parts of the game -- it's just a fundamentally different mechanic that changes the way the game can be played.
> DotA players are probably the worst to ask, because the AI is already stronger than they are at a subset of the game and they have no insight into how quickly that subset could be generalised into other aspects.
I think that's a little unfair. Most folks have been pointing out that OpenAI's current momentum-based "deathball" strategy seems to fall apart without infinite regen and a limited hero pool, both facilitated by the current set of restrictions.
I'd agree that nobody really knows how well OpenAI will adapt to the full game, but I disagree that the criticisms I've seen are meritless. OpenAI's current level of play is definitely impressive, but I think there's still room for skepticism given the current restrictions. I (and I think a lot of others) would be pretty disappointed if the TI showmatch happened with the turbo mode couriers still enabled.