I've posted something on the iEra wall but i'll post it there too so SNK and the developers can actually see this.
My idea is basically a easy but still fun idea.
When you dig you have a slight chance to dig up a treasure chest or a time capsule.
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(X + 100 (where x is the average amount of players online) : 76% (the chance the chance to dig a shell) : 37% (the chance to dig up a wild crab) x 23¼% of the whole gmap with sand x 2/4% of the whole gmap with dirt which comes out to 6,7% chance to dig a treasure chest or a time capsule
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TL;DR: You can get a 6,7% chance to dig a treasure or a time capsule
When digging in sand you can dig for a treasure chest.
When digging in dirt you can dig for a time capsule (that box what you did with your parents, put it in the backyard and open it after 20 years)
The Treasure chest will contain various items, such as hats (golden crown, tiara, oyster etc.), weapons (pirate hook, harpoon, revolver as example, also new weapon idea's), ET coins, money and more whatever the developers disere.
The Time Capsule will also contain various items such as hats (flapper cap, robotic hat etc.), weapons (Mauser 11.15 x 60R (rifle), .36 Navy Colt (revolver), just any old weapons what the developers and/or GFX staff desire),
ET coins, money and more. (maybe you guys can think about it?)
Some of the items can only be obained by using finding these chests that contain random items, to make it alot more fun and suprising what you will get.
These chests are dropable.
And what makes it so fun, that you don't know what you will get!
Sometime you'll get loads of items maybe 2 hats!
When your unlucky you'll get like only money and shells...
Conclusion. Be lucky!
Thanks for reading and i hope this gonna be a real developted idea!
Wouldn't that be awesome, no?
EDIT: Just an idea, you could get also collective items in these chests you get.
Items that you can give to a special NPC so you can reclaim a reward(s).
As example;
I'm digging for shells, suddenly a wild treasure chest appear.
I open it and found some gralats, a pirate hat, shells and a pearl (which is one of the collective items).
I'll go to a special house with a room with rewards, each reward can be obained by getting different collective items. In this case, If you give the pearl to the NPC in the house;
You can get a rare hat (as example).