These are some things that I feel need to change about the funbox to make it more fun.
Aperture Science map:
This map is definitely one of the least fun theme maps. I still get lost regularly on this map and it's just generally hard to take it seriously. I used this map once just to learn how to be a civilian. People only vote for it because it's Portal and everyone wants to see it. Almost every time we play this map the server population gets cut dramatically because everyone is underwhelmed from what they had expected.
Needs to be: Removed. I see no reason to keep it. That or it needs a hardcore overhaul
Run_scout_run:
This map relies too much on spam/luck, and rounds end almost instantly unless it's Hold mode. The only time I ever had any enjoyment on this map was when the intel winds up on the ground floor and everyone's trying to get it in which case it was just an amusing spam fest, and then got frustrated whenever teammates would take it back down to the ground. It's just generally a boring map.
Needs to be: Changed. The mode has potential, it just needs better maps. (Perhaps an enclosed building setting rather than an open area, or even a maze.)
Saxton Hale mode:
Bring back the time limit. Seriously. I just played a match where we didn't even finish the first round until the map vote because the guy was "taking it cautiously" and "didn't like Nucleus anyway". It's also frustrating when I'm the next Hale and a match winds up taking 8 minutes.
Also, is there anything that we can do about the ERROR models? Jettrax and others can see them
And, I have a recommendation for the mod. (I know someone can pass it along to the modder). Perhaps make it so the YER gives the Spy a speed boost to that of a scout, since he can't disguise and hide his presence from Hale as easily? It would give more use to that knife.
Needs to be: Changed. Bring back the time limit in some form. Even if it's 5 minutes, it's better than nothing.
Kakariko (or as Unicorn calls it, Legend of Zelda, A Shadow of the Past):
I personally don't really have much of a problem with this map, I have fun on it. I see others complain about it, however. I do dislike that the map has 2 rounds per side, yet the map doesn't change almost at all between the 2 rounds.
Needs to be: Changed. Make it only a 1 round map (since the 2nd round is exactly the same) or change the 2nd round map.
TFDB Blender: (I think that's what it's called)
This map is good in the sense that it's unique, but one thing I dislike is the fact that the rockets all spawn at the middle.
Needs to be: Slightly changed. Red rockets need to be spawned on the outside where Blu can see them easily. Otherwise it's just unfair, especially at the end when rockets spawn at an already accelerated speed.
Nextmode Vote system:
In the current vote system, you need to hit 9 to go to the next page of modes. That's fine and dandy, but most players (including myself) only hit the first mode that looks appealing on the first page, since we're usually in the heat of a round and can't be bothered to make a better decision.
Needs to be: Slightly changed. I don't know how it works now, but perhaps make it so that after a mode is played, it is knocked down to the bottom of the list on page 2. This way, less played modes can (theoretically) make their way to the front page and potentially be selected.
Arena Deathmatch mode:
This mode I don't have any major problems with since we rarely play it. The name, however, makes it sound like it is a regular arena match rather than a special kind of mod, and this deters people from ever voting from it.
Needs to be: Renamed. Like "Class Randomizer" or something along those lines to make it clear what happens in the mode.
Redrover/Betray:
My gripe with these modes are the people who hide in spawn on maps like Harvest and don't come out, thus wasting a good amount of time, unless an admin is on to slay them.
Needs to be: Slightly changed. Make it so the spawn doors stay open once the round starts, that way even if they do hide in spawn we can still shoot them.
Welp, that's all I can think of for now, may add more later. Hope I gave some good insight.