That's something the casters can harp on without yuki getting insulted. Ping and skill aren't necessarily correlated.

It seems like it's not easy for the casters to focus on what people are doing wrong/badly without offending any players. Obviously, no one wants the person(s) being criticized to feel like the casters are calling them out, so it's easier to focus on "oh shit x player is going huge" than "yeah team y just got completely wrecked and they really shouldn't have".

So, you're banning items, but instead of just using a whitelist, you're letting everyone be on the honor system and assuming they won't cheat?
Yeah I'm sure that will work out just fine.

I thought I had a long time ago when I was pubstomping.
Once I started competing in UGC cardboard I realized how very, very wrong I was and how much I could improve. That realization is probably why I still play.

Degreaser is the only way Pyro can keep up with the other classes. Simply walking backwards prevents the Pyro from doing damage with his primary weapon, forcing him to choose between switching weapons and being vulnerable to projectiles for at least 1.3 seconds, not being able to do anything unless the enemy team feeds him a projectile, or walking in a predictable path to close distance. The Degreaser actually allows him to be a threat while not making him an easy kill.

Winger's extra damage doesn't make up for the lower clip size. 100% accuracy with the Winger will deal less damage than 50% accuracy with the Pistol.

Bleed in DX8 makes it really hard to tell what's going on because of the red overlay, which makes getting hit by the Flying Guillotine and Wrap Assassin super obnoxious for people who can't play in DX9. It's less of a problem for the melee weapons that cause bleed (Shiv, Basher, etc.) because you have to be in melee range for it, but being able to spam it from long range makes it more problematic.

Liberty Launcher gives Soldiers who actually know how to aim no real benefit (in fact, the different projectile speed can hinder Soldiers who are used to the stock speed), while giving them a huge downside. This problem doesn't matter to bad Soldiers, since they can't make full use of their four rockets anyways, so they get an easier projectile for no real downside.

Battalion's Backup takes way too long to charge for an effect that is.. alright, I guess. The crit protection isn't really useful because it takes too long to deploy to save your teammates from a Kritz, and people who know what's going on won't deploy a Kritz when they know it won't be effective.

Just what I can think of on the top of my head. The bigger problems have already been discussed fairly well at this point.