Ultimately, I'm seeing something like this happen:
C9C gets into LCS. Now, C9 can't own two LCS teams, so they sell the slot. Probably, an already established e-sports organization that doesn't currently play LoL will buy them (ex. Northern Gaming or Luminosity)
Hai, Balls, and LemonNation won't stay, but Altec and Contractz will (ADC and Jungle). So they'll need 3 players.
If Echo Fox gets relegated (I suspect they will) Froggen might find his way to this new team. So that's ADC, Mid and Jungle. I'm assuming NRG and P1 are the other teams that stay up. If NRG falls, Quas will be on this new team as the top laner and Kiwikid will round it out on support.
Support is the USA's best role. In the LCS, there's exactly one American mid laner (Pobelter), but there's a LOT of American supports (Aphromoo, Bunny, Adrian, Hakuho, Big, and a whole lot more). I'm expecting this new team to find an American support (especially thanks to the new import rules), but probably import a Korean top laner that we've never heard of.
Resulting in a newly rebranded C9C that isn't owned by C9, with the following roster:
Top: Quas (if NRG falls), if not this spot will be occupied by a Korean import
Jungle: Contractz
Mid: Froggen
ADC: Altec
Support: Kiwikid (if NRG falls), if not this spot will be occupied by a debuting American