12. B wins - Aorist and Optative are eliminated
13. vo1dwalk3r's suggestion Cǝ
14.A wins - Aspirates fricativize
15. A - Locative Stays(for now)
X. What are we going to do with clusters like θx ?
X2. What would those two fables (the King and the God & The Sheep and the Horse) look like now? Still looking like PIE ?
Here's a list of ideas for loanwords that we can borrow in now
X borrow terms for metallurgy and ceramics from Hurrian, and maybe some horse-related words as well. Also have their paganism be influenced by Hurrian religion as per the Hittites.
-Sumerian loanwords for agriculture, geography, etc. (and they undergo the same sound changes since borrowing as native vocabulary)
These are from Wiktionary and this site, so if they're incorrect, don't blame me.
The latter terms after > are possible shift in meaning.
agar - field, meadow > untouched grassland (meaning is narrowed)
eden - plain, steppe, open country > steppe; land where one is free (conflated with the Eden of Abrahamic religions)
alum - a type of sheep > sheep (meaning is widened)
maš - goat; sacrificial animal > sacrificial animal (meaning is narrowed)
durah - wild goat, mountain goat > goat (meaning is widened)
ab - cow > cow (no change in meaning)
Akkadian ʃarrum (king) analyzed as accusative form of ʃarros (chief/leader)(semantic shift in borrowing)