I don't usually like to compared ships but personally think Senstar(or whatever Sentinel X Starscream ship is called) is ten times a lot more fun than Starop since similar to Megop, Starop have the major problem of infantilized one character for the other character to protect to the point they have no agency of their own and need the other character to protect them all the time which unintentionally disrespect both characters in the progress.
Senstar on the other hand doesn't seen don't have this problem since it pairing two characters that are somewhat controversial one way or another way. which made it a far more compelling enemy to lovers ship to me especially if it during the whole arresting cons on earth.
Do you know how funny it be if they both have a crush or at least develop a crush on each other and they don't understand or are very frustrated to why they can't take this one guy down for their own cause.
Maybe them being forced to work together to get out of a specific place, not wanting to talk to each other at all the whole time but having no choice since turn out cave slience is very unbearable to both of them, maybe finding out a bit about each other and Starscream maybe flirting with Sentinel a bit since he does find Sentinel a bit attractive and Sentinel is just like: ???? * angry Bisexual confusion* or maybe Sentinel just suck up the flirting at first since he does like the praise then he's like "wait a minute you're a con" and immediately go back to hating every moment of basically being trapped with the enemy and being unable to to killed him for some reason. Him acting like he didn't just enjoy the praise a minute ago and no he definitely not blushing a bit! He is since he also find Starscream attractive too .
I don't know I just find this ship very fun to explore since it not like Optimus where he see the good in everyone even Starscream or whatever...and you can already to see where this is going.. Senstar is a bit more unpredictable.