This is a lot less important and not entirely relevant, but they got real lazy with the gunslinger hats. 2 of the 5* hats are exactly like the 3*, and the only ones that are different look the same as each other with a color swap and removing the badge. It's bad enough that it's nearly impossible to get decent UVs on gunslinger gear since it starts off 3*, but even if you do get a great UV on gunslinger armor, it's pretty much wasted since IAS on guns is demolished by reloading times and small clip sizes (with an acception to antiguas which are bad on their own level) meaning if you aren't using a deadshot the UV would be way more useful on another line of armor. And on top of that you don't get much variation with costume design.
The community is screaming for a change, it's a definite that guns need to be more useful, at least useful enough that gunslingers aren't shunned out of almost every party.
As a gunner myself, I do enjoy the fact that I can kite mobs if conditions are right. However, there are certain particular drawbacks which does stand out as needing some adjustments. note that I am saying adjustments, as I do not believe guns need huge buffs. Both of these of course have been touched on in various forms by others, but wanted to just place my input in as well.
Guns do need a small damage buff, as while they do work out great solo, being a gunner in a party does tend to make me feel as if I am not holding up my weight with the speed in which mobs are mowed down by swordsmen while I kite a few mobs around not really killing any for a good amount of time. A swordsman will kill 2-3+ mobs in the timeframe that it takes me to kill a single mob. I think the scale should be closer to 1.5-2 depending on the gun. Guns like the Magnus and Autogun lines which make the player stand still to fire should be around 70-75% of the power of an equal level sword, as these guns do tend to leave you open to far more counter attacks and closers. Guns that allow you to kite, given the right conditions, should do ~65-70% of an equal level sword. Of course the guns like the Alchy lines would be on the lower end due to their status effects, while the Blaster line would be near the top end of that spectrum. I do not believe guns should be on the same power level as swords, since you do have the extra range to factor in at the minimum.
A second issue I would like to see addressed (and one that arguably stands out the most for me especially trying to solo) is mobs with the dodge/shield abilities dodge/shield less often (potentially limit it down to 1/3-1/2 chance to dodge depending on the mob), and under more circumstances then just when fired at. It doesn't make much sense to me that a mob will leap out of the way of a bullet, but will stand there and let someone with a blade bash their brains in. Simply changing this would also help out a lot of the first problem, as a good number of mobs eventually start dodging, which means every shot at them that misses is another wasted shot, on top of any shots you naturally miss with due to the nature of the targeting system. Lower the chances of the mobs to autoblock/dodge, and give those same mobs also the ability to dodge/block melee/bomb attacks. This would make the mobs feel more 'alive', as well as give more equal footing to all weapon types.