Truth be told, TFA is like the only show other than BW in which Megop is not my top Optimus ship. Instead I ship Optimus/Sentinel. So much drama! Heartbreak! Possible future reconciliation?
Also I totally see Sentinel as a bratty bottom and love the fact that fandom has written two fics in which Optimus fucks Sentinel's head while it wasn't attached. Good stuff.
Wait two
I've read only one of them, and in that one I think Sent begged for it
I think as far as tfa ships, the one I ship the most is MegaStrikNut? Megatron, Strika, and Lugnut?
The general, her consort, and their Lord, and all three of them care deeply about each other even if Megatron denies this.
Though, I do ship tfa Megop a lot (maybe not the breed of tfa Megop that's popular, though? I'm rather specific when it comes to the ship, but I feel like it can go in cool directions)
Mmmnm but tfa MegaShock, because like c'mon look at tfa Shocky. He's a massive simp, and I admire that in a mech.
OpiSent (is there a ship name for those two? OpiSent is my best bet, but SentiOp is also as you suggested a truly interesting option. You can also say it's prime²) like, all the fire and snark in their relationship and the betrayal and the emotion and just. Fun. So much interesting situations.