Most are valid points and I can surmise from your vantage point but I believe that your view is from a hard core or pro player. Even though there are many here in the community there are casual to intermediate players as well. While not exactly what everyone had hoped for I believe this update is refreshing to most KF players.I haven't posted in forever, but it's time to chime in, I suppose.
First off, the money system is good. Helps the game in every way. The new maps were nice, but have been around for quite a while now and aren't hugely changed as far as I can see.
The Mac-10 was a letdown for me. Yeah, it's a new Firebug weapon and it's decently effective, but it was a cop-out. TWI was saying that it would be an extremely unique weapon that no one would ever guess. I'm sorry, but a gun that simply has incindiary ammo isn't "unique" in my book.
Plus, one of the biggest things mentioned on the forums was how KF's weapons awesome because they were realistic and not as ridiculous as Left 4 Dead 2's "PEWPEWPEW" fire bullets. And what do they do? They add PEWPEWPEW fire bullets. *Facepalm*
The LAW being moved to Demo was a logical step, as was boosting it. But it's still useless as anything more than a gimmick. It takes up all of a demoman's weight limit and gets no bonus ammo, leaving him with the Pistol when it's out of ammo. Not worth it.
The biggest issue for me, and the biggest reason I'm not really coming back to the game is that nothing's really changed. The balance problems are almost all still there, if not WORSE, because you still have your two GOD-CLASSES:
-The Sharpshooter class still has the ability to take on every enemy easily with the Crossbow/Handcannon or EBR/Handcannon and is the definitive class amongst skilled players.
-Medics with Crossbows are still better at kiting than Thomas Edison due to their speed, better armored than the is2, and able to heal half of their health in one self-injection.
-The Commando, the only class that was really competitive with the Sharpshooter for quick target takedowns, has been nerfed. Damage was the only thing really separating the AK-47 and SCAR and that line has been blurred.
-Supports still have an overprice AA12 and severe ammo issues on Hard and up.
-Demoman still has damage and ammo issues on Hard and up. And almost all the new maps being close quarters doesn't help them. LAW, even in Demo hands, is still a gimmick weapon.
-Firebug got a nice boost, but now tends to act like a 'Commando with a Flamethrower' as one player put it.
-And of course, Berserker still SUCKS. Hard. To the point that it's a joke class to play. Medics out-tank you and out-speed you (Without having to have a melee weapon out, no less!), while almost every other class out-DPS' you from a safe distance while you have to get dangerously close to your foe to do anything. Not to mention that the Katana is still the only viable weapon.
TL;DR Summary: Sharpshooter and Medic still grossly overpowered. Firebug kinda fixed but in a lame, unimaginative way. Demoman and Support still need work. Commando nerf was uneeded and will make more players go Sharpshooter. Berserker is still a joke. LAW is still a gimmick.
I'm not coming back to KF like I was before until stuff is fixed. The game is being horribly neglected in favor of HoS and it's starting to show. This was a mini-patch that didn't fix many of the real balance issues with the classes/weapons. Maybe they'll get it right next patch... I'd really like to play a Berserker again without feeling like I could be doing a ton more as a Sharpshooter or Medic.
Another point I'd like to make is that while the game is very easy with skilled players even on suicidal, teaming up with novices or intermediate skilled players changes things dramatically. I was playing water works with a full team but we got killed on wave 3, now with pro players thats probably unlikely however this was with a fairly green team and surprisingly even though I died a lot more often I was having a lot of fun as well. So when I read posts regarding the game's difficulty I propose that it may not be the game is too easy it could be that the games novices or casual gamers have departed leaving a handful of dedicated players who know the levels/game-play inside and out thus reducing the difficulty exponentially.