So, I'm on of those people who don't necessarily like to hold onto established conventions (Surprise!). I've done work that followed standard conventions and it's a little dull; doing the same type of thing over and over again to me, is dull. I'm not saying it's bad, but I am saying that personally: I think it's dull.
I host these contests to promote innovation, creativity and to push barrier of level design standards farther and farther. Thats why I've hosted the 72hr contest EVERY YEAR for the past few years: it's a contest to push the limits farther and farther. The 72hr contest is where CSF got developed, new ideas for gameplay elements are tested and tried, we even got a VSH game-mode that doesn't require a plugin. Sometimes, they don't work, but you lost only 3 days. Thats a dinky price for the innovation or limits that you've been pushing.
The major contests are no different. Each and every contest I've hosted is designed to push you guys to try new things and think in ways you might not have before. While I do design the ability for you to 'play it safe' with the conventional map standards, the maps that try new things and push what the standards means are the ones that stand out the most.
tl;dr: Take the risks, don't play it safe, try new things. Think outside of the box.
There is so much here that I'd argue against if I still cared enough. But.. I don't really feel like going too in depth. Instead I'm just gonna present my thoughts, and not directly fight yours.
I disagree with most of it, if you want the short version.
My view on major competitions is that it's a event where you take all the knowledge and experience you've built up and put it into a project that WILL be the best thing you've made so far, it SHOULD be a representation of your current skill as a (amateur) level designer. And then you compare what you're capable of to the other competitors, and figure out where you need to improve still.
Innovation and creativity can come after you've successfully grasped the standard game.
also this all is just thoughts about contests in general, not necessarily the current ones.
72h is a good excuse to try a gamemode idea for experienced mappers. But I believe that the creative spark should have happened long before the contest started. It should have been created in a box map months/weeks ago, and looked at hard for possible problems. If you think it's actually viable then great. Save it for the 72h contest.
But again, this is only something you should be doing after you've got the standard gamemodes down and know how to design for them, because if you can't do that, with all the hundreds of examples to look and learn from, how are you going to do anything decent with your original gamemode idea, in 3 days?
You can learn a lot from just doing a normal map in 72hours. Learning to be creative or innovative is not part of it though. You're better off sticking to what you know if you
actually want to learn anything other than "can I shit out a map that is a ctfpl hybrid in 72h?" to which the answer is yes, you can, 72h is a lot of time.
But can you create a solid layout that will be good enough to keep after the contest ends, something that won't get abandoned after 1 month because of underlying issues with the design? Now THAT's hard. It's a real test to see how good you actually are at identifying layout issues by yourself using quick iterations and short tests and a well established gamemode that everyone (and you) knows how it should play.
(This is also a reason I think using 72h contests as springboards for major competitions is a bad idea, because chances are you won't get it right)
Pushing innovative limits is not something that the competition should be designed to do for all the entrants, it's something a individual mapper should
decide to do if they feel it's within their best interest to break some new ground and use their level design knowledge on new problems.
You say "think outside of the box" but I'm confident that most people on this site still needs to stay inside and study the box before caring about what's outside of it.
Unless of course your only goal is to stand out and have a laugh.
Post got longer than I expected, I just don't know how to stop typing.