Toro shouldn't be playing every day, he should be platonning with Gonzalez who can also play other positions all over the diamond. Gonzalez isn't clogging the roster and you'd have to clear up a space for Toro if you went out and traded for someone anyways.
Toro is 28, in his prime, and I agree he's probably a one year wonder here but so what I'd ride it all year long. I think it's perfectly reasonable to bet he can continue hitting better from the left side this year. His combined efforts with Romy at 1B are already pretty good. How much better of an upgrade is out there than that????
Marginal at best, and lets be honest, you only have so many bullets to spend. We aren't going to the grocery store and checking every item off the list and I'd put many other needs well ahead of finding a slugging 1b right now. If living with a Toro/Romy platoon allows me to go out and get a #2, a reliever and a back up catcher I'm happy to have that at 1B.