[@Duoya] They are Tier 1. :) 

[@Lmpkio] What you are asking is basically to allow the Tier 2 advantage and Weapon to a tier 1 Pistoleer. It cannot work. The look doesn't matter; I wouldn't mind a modified Pistol that have the look of a rifle, but I built pistoleers to be foot soldiers with sidearm that THEN become full fledged gunners at tier 2. Beside, personally, I like that image. Very long barrel pistol, still held in one hand. Cannoneer have middle range is why I am saying all this. Pistols were made to be close range, to go with the fact they uses a Sword also. 

[@Mangrale] Staff and Sword for [url=https://fireemblem.fandom.com/wiki/Troubadour]Troubadour[/url], Yes. You raised a good question about healing... but I think that I will award more EXP for supports than they do in the game.