Tyreese is unstable and huge and super good with his hammer in a non-lets-build-stuff way.
If the Carol issue isn't addressed, Tyreese and Rick are going to have a big problem. Even if Tyreese never knows that Rick knows who it is, Tyreese will have a problem with Rick not finding who did it. That said, of course Tyreese will find out.
I like Tyreese and think that he could be really interesting very shortly.
I don't know if I have a fav story line right now, but it definitely feels like they are building to something that could be very entertaining and that it is coming shortly.
Physical safety/survival, flu epidemic, Rick's unstable emotional issues, Carol being all extra calloused about killing ppl and training others to be calloused, Tyreese being super good at killing ppl with a hammer and having just had his GF killed by someone in the prison.... This is all about to explode. I keep watching because the monotony of the prison setting hasn't outweighed what I think will be the pay off soon.