My .02 on the Bill storyline from a non-gamer:
1) I thought the acting was excellent. Everyone involved did a great job with the role.
2) I do like the slice of humanity/life to show what life may be like when you're not fighting zombies. Enjoyed the passage of time aspect as well.
3) Some aspects were indeed too unrealistic (Bill going Rambo in the open, Drinking Beaujolais after 20 years

, for example)
4) I am certainly not homophobic, but it did feel "Forced" into the story.. like it was checking a "quota box" for modern Hollywood.
5) I agree with those who said it was odd to drop this type of episode in as Ep3, while core character arcs are still being laid out.
Overall I'll give it a B-. It was very good TV in a vacuum. However, gets dinged for feeling a touch disingenuous/forced, as well as for deviation in the scheme of the story and timing in the series.
Definitely not going to stop me from continuing to enjoy what is a great show so far.