Explosives and other coin bought items for builders

I think the builder should also have items to help him build/destroy that can be bought for coin. The builder is currently the only class who can't get an advantageous item for coins.

I think the builder should be able to buy mining explosives for speedy demolition, they would work similar to normal bombs, the difference would be:
5 bombs for 20 coins (stacks up to ten)
Blocks destroyed/damaged give the builder resources
Deal no damage
Mining bombs break when hit by enemies and have a longer fuse, making them easily destroyed when attempting to use them offensively. Also they can not be cooked to avoid the fuse time.

The ability to destroy them would make them more defensive, being more useful for renovating your castle than offense (Ex: Making death quick death pit, destroying enemy ladder on the side of that tower, etc.)

Of course the builder should also have fast building items, presenting Instant Wall™!
Ever had trouble building a wall? Just can't do it with all those knights? Well now you can, with Instant Wall™! The Instant Wall™ is so much faster than your grandpa's stone building blocks, it's quick enough to fit in to your busy daily schedule! Just drop, unpack, and voila! A beutiful 15x2 wall, complete with your team's doors at the bottom! And now you can get Instant Wall™ for only 19.99 coins! (+0.01 coin shipping and handling fee)
(Instant Wall™ is a trademark of bullshit inc. now with even more random bullshit in my posts!)
(Btw you were supposed to read the wall part with the voice of random idiot in an infomercial)

 

It is suppose to be 1 thread, 1 idea.

Second, theres this item called a drill... Yeah.

Also, insta wall is a bad idea. You can already just spam upward and block it, no need to make it instant when it only takes 2 seconds.

 

It said the ideas can be in one thread if they are closely related, and these are. Also the bombs are a more pricey but faster version of the drill. I see no reason why there can't be a faster way to have one. Last I checked bombs and kegs did the same thing.

 

Bombs and kegs do the same thing.

Except one destroys 1 stone block. The other one doesnt.

 

soo... That means builders shouldn't have explosives because?