I've done it (or rather, them)! Both Eng-Ital and Ital-Eng trees completed, and both, however briefly, gold. Yay, me! :D
Now I'm looking forward to getting the crowns update so I can get new stuff on my Eng-Ital tree.
I admire you more for having a full golden tree than for finishing. ( although congrats for that ) I thought it would be relatively easy to keep mine all gold after finishing. Ha ha, silly me. Almost before my eyes the skills deteriorate. I can get everything gold except the subjunctives with a plan of doing them tomorrow. Tomorrow comes and there are more degraded skills than the day before. Foolishly I have a target to become DL free within two years ie reasonably fluent enough to hold everyday conversations without hesitations.
No worries. Be warned with the Italian, though: it's not great and is clearly not being maintained. If you think your answer should be right, then it's always worth looking at the discussion thread for that sentence and you'll find a bunch of confused Italians from a few years ago listing valid answers and complaining that they're not being accepted.