You've gotta pick your fights in the Dresdenverse, or you'll end up screwed.
I wasn't making that connection as a player, but as a GM. The GM has to know when to make those unavoidable or "hard to avoid" conflicts, or pepper his adventure with only a few.
After all, PCs might very well understand to be wary, but that also depends on the adventure. If the enemies are hellbent on fightin', or the only way to resolve things is going through the villain's face...
Compare this to the Novels. Using Dead Beat as an example:
Battle with Corpsetaker. Battle with Cowl. Escaping Grevaine (and Corpsetaker). Torture session with Liverspots (I forget his name). Battle with Spirits/Zombies to get the Wardens. Final Showdown with Grevaine/Cowl.
Only the first was avoidable, and only that would've occurred had Harry slipped out the back instead of defending Bach.