Regarding my FNM experience:

1. Four Treasure Cruise is correct. You aren't guaranteed to see multiple or even ANY copies, so maxing out on the card improves the chances of seeing it. You can drop a copy or two in SB games if you suspect Rest in Peace.
2. I am not so sure that Thoughtseize is better than Hymn. Not every opponent is going to be playing a deck that's soft to the effect, and you'd still rather have Hymn against most non-Blue decks. I think we can probably get away with running 19 lands, but maybe 20 lands + 3 Hymn is the way to go. Seize did fine, but I think I'm going to go back to Hymn for the time being. Maybe stay with 19 lands but drop the 4th Wasteland.
3. 1 Liliana is okay with 4 TCruise to find the lone copy. Plus, as a 3-drop in a 19-land deck it's not something you want to see early most of the time.
4. I never had an issue with Tarmogoyf/DRS + Cruise. I was able to refill the graveyard shortly after each Cruise so they never really suffered much from the card. This is a non-issue as far as I'm concerned.
5. Delver actually feels like the worst card in the deck. I am seriously considering dropping it for something else. We are playing a midrange deck (at least in comparison to other UR or RUG), and while a double Delver draw is nuts, I don't like how we don't have Burn to actually close out a game once you get the opponent in single digits. So I am considering dropping the tempo angle for something else...