I always find myself wanting more Force of Will cards (doesn't everybody). Of course there really only have 4, the rest are conditional. How about this on the draw
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This is just probably too much of a loss and too chancey. It would probably be better to mulligan. Agreed?
I find it's better to just pack answers to what you expect an opponent to do rather than bending over backwards to FoW something. On the draw, there are really only a handful plays that absolutely require a FoW. One is Ritual, Ritual, Tutor. Another is Workshop-Trinisphere. There are a few other Workshop based configurations I wouldn't want to see, as well as Orchard-Mox-Oath, and even Mountain-Goblin Lackey. After that, most of your opponents plays are things you can address with bounce and removal.
The fact is that there will be certain hands your opponent may have on the play that are just essentially unbeatable. The probability of that happening is relatively low (ie, a more common Workshop opening would be Shop-Crucible, or Ruby-Welder-Bazaar), and it's better to just accept that there will be a handful of games you lose due to chance, rather than packing your deck with suboptimal cards like Tranquil Thicket.
-BPK