According to Tasha's characters can sway weapon proficiencies for tools. As I understand it there is no limit to this. So an Elf fighter (who has martial weapons proficiency anyway) can and really should swap away all these for four different tools .... enabling said character to start the game as with say poisioner kit, disguise kit, thieves tools and land vehicles, plus more from background and all simple and martial weapons.
This seems to be metagaming, it also seems backwards thematically - "these proficiencies are usually cultural ..... and your character might have pursued different training" but wait they didn't really pursue different training because they did learn to use all those weapons and more!
I like the idea, but I think I am going to limit Tasha's to one simple and one martial weapon proficiency swap for a tool.
This seems to be metagaming, it also seems backwards thematically - "these proficiencies are usually cultural ..... and your character might have pursued different training" but wait they didn't really pursue different training because they did learn to use all those weapons and more!
I like the idea, but I think I am going to limit Tasha's to one simple and one martial weapon proficiency swap for a tool.