Not at all convinced Maddocks is a better test winger than Koro or Sefa. He's fast and nimble but he's also very light. I think we need at least one hard hitting, hard running winger. I would prefer Sefa given we already have one league convert throwing hail mary's on the opposite wing.
Maddocks is deceptively big. 194cm and 96kg according to wikipedia. That makes him heavier than both Sefa and Koro. He's certainly a chunk taller.
I agree he doesn't play as physically as them and needs to get a bit harder hitting in attack. Some of those Karmichael Hunt angry pills to really hit in attack. I'm less concerned about it in defence. His defence does need to improve but probably more from a completion percentage than big hits.