Blind LPs can be fun, but they only work at their peak for either horror games (where the LPer is still working for comedic effect, as opposed to say, Voidburger's general policy of LP'ing an actually scary game with subtitles only) or really terrible ones. If you're going to do a blind LP for any reason however, you seriously need to consider heavy editing.
The best LPs (IMO) come from people who know the game well enough to make watching someone play it not be a chore, and they will also probably have the most interesting things to say about it since they have lots of experience with the title.
HC Bailly is especially good at this since he's good enough at most of the titles he plays that even for something grueling like Final Fantasy II, he can play it in a way that doesn't make you automatically hate it. He's also good enough that for the most part, he's not offscreen grinding either. He also doesn't ruin the fun of watching somebody else play the game by, for example, exploiting Vanish-Doom in FFVI or the ability to get the Lionheart early in Final Fantasy VIII.
He's also not just funny, but fun. Some LPers, like say, the Tipping Forties, can become insufferable with their cynicism, but HC Bailly is always having fun. I was already like Chrono Cross, but his LP of it is a fun experience in and of itself.