My views on TFT currently
Garen is the ideal early game champion that remains solid to the very end, and is easy to get to rank3. As a result, going for a early game 3/3 Noble setup is a easy route however it isnt neccisary if something better presents itself(Like Wild).
if youre getting alot of WW's and Nidalee's, build them up. Walking into mid game with a rank2-3WW and rank2-3 Nidalee sets you up for good builds into the end game.
Mid game now: Sittin there with a WW, Nidalee, Garen as the easy early game choices. Next thing id be looking for in mid game is Elise and Gnar which is gonna put you at 3/4 shapeshifters. Grab a Gnar even if you cant rank him up, youll want him.
Into late game: Setup looking something like WW, Nidalee, Garen, Elise, Gnar, Random ranked up filler champion. What youre going to be looking for now is Draven and Swain. Whether you can rank them up or not, target them. Draven+Swain = 2/2 Imperial bonus and both of them at rank1 are as strong as some rank3 champs. Swain+Elise(2star)+Nidalee(2-3star)+WW(2-3star)+Gnar(0-2star)+Shyvana(1-2star) 6/6 Shapeshifter = they are all immensely tanky. 4/4 wild = your whole team gets huge AS boost. 2/2 Imperial your Draven is incredibly broken.
This is what i generally aim for and can complete virtually every game. usually wins. Also Rapid Fire cannon on Nidalee is essential and ridiculously broken. It bugs her out, causing her Cat form to also have the same long range as her Human form. So shes basically just as strong as Draven with this item.