I just tought something, it would be really cool if Shen trying to affect Mc made him remember his accident as a nightmare/illusion, Mc failed to acess those memories while training last update so maybe that would be a trigger strong enough to see more of his past, it would also be a good way for him to learn how to do it at distance if he used Memory Echo as defense through their mental link.
I can imagine Shen trying to stop Mc during his fight with cole just to be caught off guard by a Memory Echo.
MC already can do his Memory Echo from a distance. Or at least partially. If you kill Jake, MC transfers his memories to Mia without touching her. He still needed to establish a connection by touching her first but he did the rest of the transfer without holding her.
A better way to train his Memory Trait from a distance would be using his spider threads to do it. We know he can send power through it and he's used extensions of his body to read from a distance before like during his Tiffany fight. So it's likely that he can already use it to read memories. It should be a cake walk to do it, especially at Level 3.
Personally, I think WW is purposely capping MC's memory powers and saving them for the later levels. I don't mean that in a bad way either. If the MC could read memories without touching or anything, he would become too broken. It isn't hostile in nature and therefore can't be blocked via a defensive power struggle. There's also the fact that it's an inherited Apostle Trait, meaning it can operate extremely above it's power class early.
In fact, from what I remember, only a few people have completely blocked his Memory Trait. Those people are Shop Keep, Jake via his Authority Trait, The 2nd during Michael's Evolution and possibly Ella and Aglaecwif during their later encounters. It didn't work on Valravn at first, because of his passive, but over time, it started working as he weakened.