You're right in that you're probably not going to get very many of the advantages that you may get in real life. I have noticed a difference on screens like you mentioned, so that's nice. Otherwise, if I'm splitting out a TE, it's because that formation has something I like, not necessarily because it'll give me the matchup I want like in real life. Normal Y-Flex (or Y-Slot, can never remember) has some nice stuff, like a play called Slot Choice (I think) which is like how teams run Shallow in real life, with the receiver either running the dig or settling in a soft spot against zone. You also get HB Power, which motions the TE across the formation to block and a PA WR In play that includes that motion and then has him run a shallow back to the other side. There's also stuff like Trey Open Offset, which is great to throw out of, because you get six in the box most of the time since the defense recognizes it as 11 personnel. Also, this doesn't help with your TE stuff, but I like including that formation alongside Bunch/Cluster and using the 4WR formation sub. Then you can get a nice 10 personnel 3x1 offset formation and no huddle into a 10 personnel Bunch set.