Prior to 9.15 From I would try and find a champion that completed built up on my comp, or got me to a T2 / T3 champion.
The point I am trying to convey is that items have taken priority in a game where team comps & champions you'd think would be a higher priority. Additionally items are more RNG then any other part of the game because you have a fixed % of getting a specific item.
To add to that, you could have a well built team comp and still get crushed with a lesser opponent because they item stacked which more often then not is based on dumb luck.
In my opinion items should not be a priority in a game called "TeamFight Tactics" because in the end the comp doesn't matter nearly as much as it used too.