There are two camps with Goins. One camp that believes he can be something and another camp that doesn't. I am in the camp that doesn't, however I also admit I never saw a 1.5 WAR season from him either. I think he can provide value to a team looking for a 2B/SS stopgap/solution. Selling him at the height of his value is ideal otherwise we'll have another situation of Cliff Pennington, a 2B that provided value but was ultimately a backup.
The biggest strength Goins brings is his defense. Goins has always rated positively but so has Pennington. You may miss a few DRS here and there but overall you are getting a positive rated Def player at 2B/SS. Previous to this year, Pennington actually ranked ahead of Goins in terms of Def.
In regards to offense neither are league average hitters. You aren't buying them for their bat and counting on them to provide offense is silly. However with this lineup, if Travis goes down or anyone needs a rest, their bat shouldn't be the reason this team wins or looses a game.
Overall I just see the same Goins-value like player you'd get out of Barney and Pennington. Unless you feel differently? Would love to hear why people would be pro-Goins aside from Gruber and LTBF.
Why another team would want to take Goins after what I've said is if they are in the camp that thinks he can provide something. I am sure his "breakout" year has many curious and if we didn't have Travis then I wouldn't advocate trading him. But the Jays do have a 2B that is better.