A while back I saw a user post (you may have seen it) where he found a parallel between Lou and Geo. On the one hand, Lou didn't feel he was bringing anything to the table, thought Lily wouldn't like him because he didn't have powers, etc. Until the poor woman, after returning from one of her missions and seeing that Cole had grown up, felt helpless and felt she wasn't being a good mother.
Meanwhile, Geo thought that if Cole didn't need him to become more powerful, he would abandon him.
On one hand, happy ending. At times like that, when it's no longer about the physical pain, but the pain a person can come to feel in their heart when they see that they are not doing a good job in the role they fulfill in their family, in this case that of protector. But not because she is a ninja, but because she is a mother, is when she needs a person's support the most. It is when Lou understands that despite not having any power, he was just as important for the role he played in his family, that of protector. Again, not because he was a hero, but because he was a father and a husband.
Cole decided to be more direct and make Geo understand that he needed him, not because of his power, but because at this point he was already someone important to him. Geo, the kids and Bonzle were now the support Cole needed.
So remember when Cole lost the traveler's tea and even dreamed that his friends would let him die just for losing it? It's one thing to lose a tea bag (it was important, but you get the point) and another thing to lose someone in your family. If Cole felt guilty for the former, can you imagine what he must be feeling for not having been able to protect Bonzle? For not having fulfilled his role as protector of his family.
Possibly, as with the traveler's tea, Cole will begin to feel immense guilt. I can imagine him believing that Geo hates him and even having a dream similar to the one he had in “The Traveler's Tree” where Geo takes the kids or something like that (custody fight).
Until August comes, we won't know what the reaction will be especially from the searchers and Cole. But I think it would be the perfect time to bring Lou back.
It would be a lot of fun for the two of them to meet, Geo talking to him about his problems but not saying Cole's name. Lou seeing a person with a similar problem to the one he had, would tell him about his experience. But Geo's conflict would no longer be on the issue of the power he gives Cole, but on how he can make him not carry all the emotional burden.
Then Lou, with a dramatization, would show the guy how he should tell this person that a family is a family of two. How this won't work if the other tries to do it all on his own, unless you're a widower like him. But since this is not the case, in a family two people lead and those two people are the foundation of the home, and if this foundation is unequal, then the home collapses.
Geo doesn't want this to happen, so he runs off to talk to Cole, but not before thanking Mr. Random for his advice.
Later they find out they were father-in-law and son-in-law.
Anyway, taking advantage of Cole, Geo and the searchers to address issues as to what a family can deal with.
(If you see differences in how I refer to some things, it's because I'm too lazy to look up what they are originally called in English).