There is nothing wrong with the amount of bricks needed. Everyone in the clan that built something to apply had well over 5,000. Its because we used small details to enhance it. If you can not deal with the amount of bricks needed then you can just go on your merry way because it is not changing.
Also to mention the fact that we like to encourage people to make something different than most Blockland builds also adds onto the fact.
I just finished making a build that has 106,000 bricks. Not to mention all by myself. It is not that hard to pass the 5,000 minimum limit.