The tutorials can be combined. For me, it makes sense to have the first two and the last two (building and signals) as one tutorial each.
The tutorials take too long. There are times when I feel like "I get it already," such as in the first tutorial when you have to build the loop. I also felt ...

I agree with other users that the new medium pole needs to be diagonal, but I also like the top part of the medium v2b. I think a compromise between the two would look very nice.

(Quick sketch up done in blender):