That's what planning the structure out is for.

And not particularly, no. I just don't want to see 'Community project? CREATIVE MODE FOR EVERYONE!' become a staple in the way the server operates.
Who says it is?
The world straddling dome of glass that makes eastern expansion a no-go.
The Frostfall walls that in no way required creative and seemed grossly unfair to the people living in Bridgeport at the time.
HA, just move North a bit. Plus, again, the glass dome was created by Tank.
The Frostfall walls were on a different map. Not to mention you all pooled your resources because of the RP. Even still, the walls were simple.
We have had many wonderful structures and cities built both by individuals and as community projects throughout the history of the server. During our time as admins, Wampbit and I always insisted that these things be built in survival mode (bar the very basics such as perimeter walls and town hall for a spawn town), and yet built they were, and this is something I firmly stand by. So what if it takes a couple of weeks to build a big project? A couple of weeks is not a long time at all. Nor is a month. Hell, a project built over the course of 2 months through the persistent toil of the community would be far, far more worthy of awe than something built in a couple of days on creative.
[cliché]It's not about the destination, it's about the journey.[/cliché]
Answer: Some of us have lives.
At any rate, move the [censored]ing to the server forum or talk to Tank about it.