Is TP a must this season?

I prefer to take flash+ignite/exhaust but a lot of people seem to take tp. I feel like with homeguard its really not necessary early game, but I could see it coming in clutch late game.

If thats true, what's the better trade off? no tp late game for more pressure via damage early game, or, no extra damage early game so can get back to lane faster sometimes and that to objectives/enemy base late game?