I agree that most VA complaints are exaggerated. BK isn't genius stuff however. I've heard the "tin-can" effect explained away as this is how the spirit you really play as, would hear the voices. That may be believable, but it still makes for some crappy-sounded (and even crappier voiced) VA.
That said, it doesn't really affect me much. Awesome VA is a bonus, but bad VA can be ignored. I haven't even disabled it. Why? Because I read MUCH faster than any actor can voice the lines. As soon as I'm done reading (usually 1 or 2 words into the voicework) I just hit A to continue. For the record, I do this even with good voice work. I can't be arsed to wait. I'm not watching a movie, I'm playing a game.
Off topic for a bit. I liked ToS quite a bit. The voicework was better than average, imho (BK is much worse than average, by comparison), and the storyline was pretty convoluted and 'meh', and the characters were pretty cliche (but what JRPG doesn't feature that these days?) But I think that the characters in ToS was WONDERFULLY realized and scripted. A generally fantastic translation with many, many truly touching and memorable moments, particularly in the Z-button cutscenes that happened throughout the adventure.
We'll see how BK fares in comparison. I'm only about 11 hours in. That said, I was prepared for a game significantly worse than ToS, as that seemed to be the consensus amongst early adopters of both. I must admit that I'm pleasantly surprised. The combat system is fun and engaging (once it develops a bit more, after the first 2 hours or so), and lends itself to quite a bit of strategy. I can't stand card battlers, but thankfully, this isn't really one of them. It has some of the overarcing strategy involved in card battlers, but without the obfuscated and mostly random bullshit they put you through. Unlike most card battlers (to me) there is a VERY clear strengthening of options, strategy, and powers, more like a regular RPG. It's very satisfying to build a "deck" of 30 (so far) cards per character, and create fun little combinations of attacks (physical, elements) AND defenses, it's a very unique twist, and despite the strategy and turn based nature of the offensive rounds, combat generally passes quickly. Defense is fun, because it's much more twitch-orientated than the fighting is.
It's just very, very interesting gameplay so far. I like it! I hope it holds up.
Edit - Just wanted to add that Kalas LOOKS great. As a main character, he features the strongest character design so far, and combined with his slick stance and animations, makes for a very appealing lead character (so far.) The art style for this game is very unique and bold, very colorful, and the backgrounds are just FANTASTIC. The music. G-d, some of Motoi Sakuraba's best ever. Up there with Valkyrie Profile, imho.