This map concept has been laid long ago. First time the layout has failed on term of competitive, but it got released anyway under the name Spinach Enfolded. Second time it was done as an 8 players map like 1 and a half year ago I think? Later the idea got throw into the idea bins, The layout was a disappointment in term of high level competitive(If anyone wanna copy it just Take it.), it's not good enough.
Till like November that I dug it up again and scrapped for a very small 12 players instead. kick the word 'competitive balance' out the window. On the file name you may see stuff like 2.0, don't get confused It's not like the remake of other people map. I just used that one to make me not forget about the 2nd unreleased map(most likely that I haven't forget it yet). Who know maybe one day I will remove the word 2.0 like nothing ever happen here.
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I was once thought that I wanted to bring this undersea environment concept to a bigger map size. I know that it will be a lot of work on environment side. long story short, I'm very pleased with this run, I probably won't do any custom theme on the big map like this ever again after the next one(not any time soon).
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Why a 12 players map? For multi-purpose I would say, Like sometime we want a smaller size 12 players map, or an average team game with enough content. It may not be that good in term of overall gameplay experience. But it served its purpose.