I know i dont have the activity requirement to join this giveaway but im gonna post my thoughts anyways, i play from time to time on primedice usually on different default accounts but my main account is unibtc.

The features I'd like to see OR improved are the following:

1. Deposit balance needs 1 confirmation. These days, 1 confirmation sometimes takes ages for bitcoin network to confirm. I'd like to see an instant credit even with 0 confirmation. Alot of gambling sites do this with no issues.

2. Like other people said, Investment. Dice is a popular bitcoin game and some non-gamblers just want to earn by investing.

3. I've seen some of this request over the chat on Primedice, "turbo" mode. Like betting 5 spins and get results almost at same time. I don't know if its possible since every bet is processed by the system, so making it fast might stress the system. But it still a good idea.

4. Bitcointalk.org is an awesome forum.. But it would be nice to have your own simple forum where newbies that don't know about bitcointalk will be able to get some help by reading guides, faqs, current events, promotions etc on the site.

5. Bitcoin gambling in totality is still at its childhood, more and more people everyday gets to know about bitcoins for the first time, It would be nice to be a bit more "newbie" friendly site. Like maybe a welcome page with faqs and guided tutorial? any idea that would make a newbie feel at home.

6. Another good idea is maybe a jackpot? like if someone hit 77.77. You can put a bet limit to be qualified for this, so low bet spam will not get this jackpot. And maybe every player's lost will add a little percentage of that lost to the jackpot prize.

7. Maybe a dedicated Live support that would attend to players concerns immediately.

8. Promotions.. I know deposit bonus is a bad idea for dice sites. But maybe you could filter the spammers by just releasing just a percentage of the bonus everytime he/she wagered an amount of bets. and it doesnt have to be a big bonus. maybe like 10%  and 20% by weekends. Just an idea tho.

9. More better HD themes.

10. I never played using autobet, i play by my own instincts and i randomly change the Win chance percentage. But somtimes its kinda tiring to have your hand on the numpad and changing every chance every roll. It would be nice to have like a preset button for chances too, like 25/50/75 or a button to increase/decrease chance by 5.

11. Speaking of chances, personally id like to risk sometimes, would be nice to like have a button that when clicked, it will give you a random chance percentage number,ofcourse its still up to the player to accept it, he can click random again to generate another. And to avoid a very random number, it can be like, generate a chance number 50% above and 50% below.

Well thats all i can think about for now. LOL Its a bit long, but im guessing this is what you wanted and not just
"username is: xxxxx, i want this xxx. give me bonus" post.

Happy 2015! for all of us.

-uni