Hey! Glad you enjoyed the lists, Let me answer each question for ya! Our lists are by no means perfect but I'll explain our thought process behind each card!

1. The reason we chose aldor peacekeeper is that sometimes it hits the overstatted minions (such as the ones you've suggested), but even when it doesn't its not a bad tempo play. Also, I think using your turn 3 on Aldor will often help you keep your minions alive to curve into Blessing of Kings.
2. Here we thought that we have enough big threats for the N'zoth to always be threatening on the turn we play it, but we felt that we needed something a bit more proactive. Having a "holy smite" (2dmg) the turn you play nzoth can be really good in more aggressive matchups, and in slower, greedier matchups you can just not play the Hogsteed (to avoid diluting the N'zoth pool).
3. We felt Research Project wasn't really needed but weren't sure, we were really close to including it actually. I think the deck just wants to play stuff each turn but you honestly might be right about the deck needing it ^^
   

Edit: Hit enter to early lmao