Well, at some point, without the ability to trade Worn Leather for Tainted Cloth gauntlets as a means of bulking up the hack and slash, the idea that BT can get old is certainly understandable. But the only point it overstays its welcome is at the endgame dungeon, and by that point combat is trivial, so you can hoof it to the climax relatively easily.
You forgot, though, that BT has the most brain dead unlocking system known to man. Thankfully, the ability to download the soundtrack from the BT website mitigates a great deal of this, but having access to the ending FMVs without a solid two hours of donating to priests would be nice.
Irony: They fixed that right up in the PC version, cutting the donation-spam required by a factor of 10 or so.