Believe my, my alignments are correct; I studied the gpx data and I can assure you this is very close to perfection. I'm not only aligning but also smoothing curves, which is actually one of the reasons I started this work.
About the gate you mentioned: which one do you refer to? I believe you mean https://www.openstreetmap.org/node/11144108512, but as you can see from Bing imagery it is a oneway street
Yes I know, sometimes I don't add direction tags because I primarily use JOSM, I prefer to add those tags using iD and in fact I do a double work (release an edit and then check which problems weren't flagged by JOSM).
About the parking areas: you're right, but routers will anyway give you directions to the most close point, which most of the time is correct (also: mapping for routing is a difficult subject, the main opinion is to avoid it)
About the broken turns: can you link me them? So I can exactly see what I did and understand and avoid to do the same mistake again

Lastly, about the revert: if you notice a mistake, or that I accidentally broke something (in the changeset you reverted for example I was fixing the fact I broke Torre del Cerrano Est relation, that's why I was really pissed off), please comment something like "hey this [...] looks like a mistake to me" and I'll look into it.

Thank you