Since this HFA discussion is ultimately about Farrell, these thoughts
1. Yes, HFA is advantageous. No one doubts that. However, so far in all postseason games it's about even-steven on home vs. visitor winning, plus someone said the long-term edge is 55-45 in favor of the home team--not a real big edge. Plus the Sox took 2 of 3 in Cleveland in the regular season, 4 of 6 overall and had almost the best road record in MLB. Yes, Cleveland did thrive at home this year, but not against the Sox.
2. The real issue is whether Farrell even cared about HFA. The critics say, "nope, he gave everyone off the final week when the Sox lost 5 of 6 after winning 11 in a row. Nobody cared, least of all Farrell, who only wanted to rest his guys, let Ortiz celebrate, etc." The critics are dead wrong. For one thing, the Sox didn't clinch until Sep 28, the second game of the final six, which Kimbrel lost by walking 4 guys. This was totally unexpected because the bullpen was terrific in September. But there is no way, no how a rationale can be made the Sox weren't trying that night. They lost, but they also won the ALE when Toronto lost. The next night was the one game of the final six when Farrell rested some guys and started Owens instead of whoever. Anyway, the Sox lost their 3d straight at Yankee Stadium.
3. The final series at Fenway was against the Jays who had everything to win/lose in that series. The evidence that Farrell also wanted to win is unassailable. Thus the Sox won the first game, 5-3, with Porcello on the mound. The Sox lost the next two, both very close, despite starting ERod and Price. Kimbrel, our $9M closer, gave up the winning run in the first game, and in the final game of the season, despite Price and using the regular lineup (as was true of the first two games), the Sox lost 2-1 when Ziegler gave up the winning run in the 8th. Some complain Price should have stayed in longer than 5 innings, but its doubtful he would have gone beyond the 7th. Moreover, carping keep forgetting that the Sox scored just 1 run in that game--the same number Price had given up.
4. That final week needs to be seen in context. In the final 1/3 (Aug-Oct) the Sox played 2/3 of their games on the road and had very few days off. Farrell could have justified giving the key players more than that one rest day (game 3 at Yankee stadium), but stayed with his regulars for the 5 of the final 6 games because, quite obviously, he wanted the HFA too.
5. Kimmi was one of the few who argued rest was the right thing for that final week. In retrospect, she may have been right. Farrell should have rested his guys more than he did. Chances are very good they were tired.
6. However, I think the real problem was that Porcello and Price simply weren't up to the postseason challenge.