[Miller]

Agreeing with Miller, and plus, do you know how many times I've had to grind and beg people for niche weapons to unlock a class? It's actually kinda nuts.  Korvara drop rates are not fair and the chances of you scoring a katana even if there's SO MANY is slim... Boxer? Just boxing glove... Hah, good luck man... Engineer's wrench? EXTRA GOOD LUCK! Solblader faith scaling weapon? Tomes don't count buddy, forever a soldier.
It's beyond irritating knowing what you need and grinding as a base class and in worse case scenario, both promos needing specific weapons to promote and leveling to the 50's while not having your promo classes due to weapon requirements... it happens too often. And begging players while it can work, sometimes doesn't...I've been in the scenario it doesn't many times.

Just for your own clarity / future reference.
Wrenches and Boxer Gloves are in the casino shop. A wooden katana is easily craftable at the start.

To further elaborate on my own post though:
Having starter weapons for promotions helps give new players an indicator or incentive to try out certain classes, if I saw a boxer glove in the first shop in the game; I may consider, "oh hey, maybe there's some punching skill tree related to boxing?" similarly this may also apply to a weapon such as a katana. If two weapons of the same type exist, then you'd look for the differences in aesthetic/subtyping which leads to healthy assumptions. This isn't foolproof considering that you still need to know which base class has said promo; but it'd be a good way to nudge new players at the possibility of x/y classes existing along with helping players who don't know all the shops/crafting options along their way.