The handling of character emotional archetypes is pretty clumsy, but the relationship between Raleigh and Mako hits a few perfunctory checkboxes that evoke the idea of some kind of more than friends dynamic like a crush or some kind of emotional intimacy.
There's the perfunctory "girl sees buff dude nearly naked", "girl spies boy from a hiding place/behind a door", "girl thinks boy is knocking, gets really excited, is disappointed", "physical altercation as possible sublimated attraction", "boy stands up for girl's honor", and a few other dramatic moments.
The general lack of weight the movie places on the interpersonal relationships is such that the movie doesn't seem concerned whether there's more to their friendship or not, as it doesn't answer the question of how to properly punch large monsters in the face.
The movie sort of started to build something, then didn't do much to say either way.
I wouldn't mind if they were just really good friends that punched monsters in the face very well.
The irony, or ambiguity, to the situation is that love or not, the two pilots are more intimately tied to one another than any steamy romp could provide. I feel the movie could have done more to show the uniqueness of that kind of situation or the link in general.
Some things were sort of set up for the link that fell by the wayside, like how in the first fight damage to the Jaeger inflicted serious physical pain. That didn't carry over too much.
There's a brief touch on the typical father-son "what did you wish you could have said" situation where the Australian Jaeger pilots have an assumed knowledge of everything they didn't feel like saying. At a later juncture the father has a brief bit of dialogue when he's forced to face the enormity of their lethal profession, and despite having the finest technology in the world to be sure his son knows said everything he wanted to say, he's fearful it wasn't enough.
I found the idea of having the convenience of shared thought to express feelings, but fearing that in the end you can't be sure you've earned it rather poignant, although unless you buy into the concept and fill in many of the blanks yourself, the movie doesn't put much into it.
An exploration of the other Jaegers and their pilots would have been nice, if they allowed for more running time. As highly charicatured as they were, the movie's perfunctory treatment of them in how telling how accomplished they were off-screen versus what they were shown doing on-screen was a bit lopsided.
I'm also not sure if it would have been cooler if Idris Elba played a character named Idris Elba, because that might be as anime a name as Stacker Pentacost.