Oh goodie, some more Oli videos.
Dotcom, I feel your first opponent had no solid idea what to do against Oli, especially when he was Zard. When you were coming in deep at one point, I felt he could have Naired instead of Bair to gimp you (I mean, you could have countered with an aerial if so, but Zard Nair comes out pretty quick and using one of your own aerials would waste precious air time and have caused you to fall to your death). That second match was better for him, with the jab reset and whatnot with Kirby (and I think you felt that feel you feel when the pikmin antenna touches the ledge, but you don't reach it anyway T_T), using a quick aerial to get off pikmin (Nair in this case) and so on. I still think he respected your aerial options off stage a bit too much (he could have Naired or Daired for the gimp at some points).
As for your own play, you really shouldn't roll all that much with Oli (it has no invincibility for the last 14 frames, leaving you open to fast characters trying to chase with a dash attack or grab) and wavedash instead (and you can also pikmin toss after getting a better stage position with it! And you can waveland out of SH pikmin toss as well). Tbh, you seem to know what to do in most cases. Just don't get predictable with your grabs, as some characters can bait and punish it fairly easy (Fox comes to mind) and be aware of other combo starters like Dtilt and dash attack if you see an opening instead of grab to Uthrow (both of the attacks come out earlier then grab), but you've also been using those, so yeah. Seconding that you should JC Oli's grabs.
Only watched those matches up till now, but I'll update this later, maybe, after seeing some more. Shok, please post vids too. I need more Oli videos to see what other people are doing with him and picks some things up, maybe.