damn, you keep on making new thread, when I was done writing you already locked and removed the other threads (I tried posing 2 times in 2 threads by you)
Here is what I came up with. I tried to make it so you can easily determen wheter a map is a gimmick map or not
gimmick maps are:
1.Maps not ment to be played
Pretty much idle maps
2.Maps designed for achievement grinding
achievement maps
3.Maps not having a win condition
training maps, probably some other too
4.Maps that have an unorthodox gamemode
Maps that use a gamemode not based on an official one.
To make all a bit more clear, here I apply these rules to some maps
-achievement_idle
gimmick map, falls into 1
-achievement_demoman
for those of you that don't know this, it is a map for grinding kills for the war update. I falls into 2 as it is kind of an achievement grind. (otherwise it would still fall into 3
-cp_steel
It has a custom gamemode, but it is essentially a variation on a/d cp, so it is not a gimmick map
-cp_bestinclass
It is also a variation on cp, so it is not a gimmick map
-balloon_race
Also just a variation of cp
-bbal_*
damm, it actially is a varation of ctf, but I do consider it a gimmick map, this is where my rules fail
-billiards
"sports" map, so it is a gimmick map
-tr_walkway
training map, so still a gimmick map
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now to discuss your options
orange map, no, not a gimmick map, just a badly detailed (and often unbalanced ) map
Idle, yes, a gimmick map, see rule 1.
Full of hl2 textures, not a gimmick map, the mapper just doesn't get the tf2 style.
unbalanced. Not at all a gimmick map, they just have a bad mapper, I think it is completely unrelated.
training, Yes, see 3.