I miss TP revive. I also know riot hates straight up reverting things.

I miss Malady, Ionic Spark, Madred's, old kayle passive, and many things. I will never get them back .-.

Maybe, but definitely not a trinket (Dominion is more fast-paced).

GA already is basically the revive item, but got something in mind that's similar but an active?

Not as a trinket, but maybe an actual item you can purchase with the same active.

Basically an item that has the same cooldown as revive did, but you actually have to invest into it so its not abused.