But it looks like the introduction scenario was made to introduce the player to the future campaign, not to introduce the player for freeplay. I wonder if we had no expectations at all, how would we had perceived this game, would it looks like a good game?

Right, and in the case of a new player ...

Background:

I played Factorio for about a hundred hours around 0.14 or so, up to launching a rocket. I played the campaign a bit, but I gave up when I realized I needed to build a very large factory that probably meant to be deleted on the next level.

I was looking forward to trying the new 0.17 ...