There is no one forcing you to play Lookout, so when you play it, you're responsible for the risk you take.
If you happen to see "Familiar, Familiar, Silver", that's not so disastrous. When you have at least 2 Familiars and your opponent has a couple, Curses will run out pretty quickly anyway, so I might trash a Familiar here if it isn't going to deal out an extra Curse.
Also, with this selection, you might have opened Lookout/Potion which isn't the best for getting early Familiars so you've already gotten a bit lucky to be able to get 2 so quickly with your less than ideal opening.
This is all just to say: Lookout doesn't need a fix for its forced trashing, if anything it'd be fun to be able put one of the "looked-at" (not revealed mind you) cards in your hand, but that bumps it to $4 at least, maybe a mediocre $5.