Three things.
1) So how exactly does Kaio-ken exactly work? It's not a transformation like SSJ so I'm going with with what Goku said about strain on the body. (When I was younger, I thought it was voice-commanded since he got the boost by screaming "TIMES FOUUUURRR!" ) So is it like a technique that increases technique for a minute and increases (By screaming) or what?
2) Is there like a difference between Kamehameha, Gallick-hou and Masenko outside of color? Seriously, which one is physically stronger?
3) I bet of this was coming out weekly like in the old days, and if the forums was around we'd be like "Oh and here's Goku pulling another superpower out his ass. You know, Kenshiro never pulled this kind of stuff."
EDIT: Okay I just saw both dubs for the Kamehameha vs. Gallick-hou scene and each one has Yajirobe saying "Oh no, if I knew this was gonna happen, I would have eaten more jelly donuts/pizza and ice cream."
....That's like...a 4KiRAB joke...