Strut is far from useless if you know how to use it properly. It's a great roaming passive, lets her dodge abilities in lane pretty well, and some champions can't turn around to hit MF safely. Also Bloodthirster works extremely well with it.
That said, she isn't starving for gold. She has an amazing early-mid game, and heaven forbid if she gets BF sword early, you will feel it.
The only change her passive could use is possibly reducing the ramp-up time of the speed boost, reduce time before her passive reactivates (by a second or less later on), and/or minion/monster damage doesn't disable it past level 9/11.