Cause in a game where you can play a water ninja frog, a pink puffball black hole, a tiny man throwing plant creatures, a large turtle monster, a magical elf princess, a electric rat, a small underdog boxer, a egg laying and throwing dinosaur, a superhero race car driver, a psychic abomination, a pink puffball singing diva, a large crocodile, a dog and duck, a fitness trainer... etc.
We then have a arm full of swordsmen and women with little gimmicks tacked onto them. But at their core they are still a male or female running around slashing with a sword. There's noting wrong with having some of these folk for sure, but it gets a bit underwhelming compared to some of our other options out there like a fairy puzzle princess, a stretch armed boxer, or a rolling western armadillo playing sheriff. Though I actually did and still do root for Takamaru and Sable Prince to a degree myself for various reasons. I even see some appeal in Isaac's earth bender aspects but find his design really flat. So it's not like I'm turned off by sword users period, it's just I rather Fire Emblem and even LoZ supply us with something more interesting then more variants of their swordsmen.