The 2 best players, Yay and Marved aren't on teams. The only good IGL is FNS and he's perma botfrag (although he's been improving aim wise props to him). The other "proven" IGL options are Vanity (teamless and doesn't have that dawg in him), Dephh (actual paycheck stealer), Stellar (B+ only I think). So your only hope is NRG, but Victor is also super inconsistent, and S0M is still really unproven. Crashies, while being super reliable and S tier overall, isn't that dude that can hard carry usually. 2 out of 5 NA teams are just hopeless, C9 bc they're broke and EG bc they're stupid as fuck and have 10 mid players.
I feel like NA also lacks these hyperflexible players that Fnatic and Navi have that make their team comps super tight knit and redundant in a good way. Navi can make any comp work cuz everyone on that team is super flexible and a beast, same with Fnatic, especially Chronicle and Leo. Teams like that are really resilient to meta changes, unlike all the teams that are in shambles after the Chamber nerf. The only NA players with that flexibility are Ardiis, Trent (actually god tier but choked on LAN, hope he gets past that), Xeppa and Leaf (super wasted talent) and Zekken (doesn't have dawg in him, choked on LAN). But unlike Fnatic and Navi, these guys aren't consolidated on one team.
Upgrades:
100T: Put cryo on perma jett on most maps, make him learn a new agent so Asuna can be on Raze, Get back Sgares or someone similar because Stellar needs help; still will only be A tier team, not S though
C9: no money, plz trade Xeppa and Leaf to good teams
EG: another wasted spot team
Sentinels: actually have hope if they drop Dephh, let Sacy IGL, move Pancada to sentinels like he wants to anyway, Marved on smokes. That team has the highest ceiling with the most firepower.
NRG: this team is the best constructed, but lacks firepower. You gotta replace Victor with Trent
Ascension winner: M80 or the Guard, these teams are so well constructed role wise especially M80, I think they can be better than 100T with time