Adding a queue would not make the site better, it would make it harder to run.

Adding queues allows every single ponzi to collapse, and you've seen it before. Look at what happens when a queue is in place:

User 1 deposits       User 2 deposits        User 3 deposits
0.01                       0.01                        0.01

One thing from this, you'll notice, is that it's easy to pay User 1 because you just pay him with the funds he deposited plus that of user 2. Problem is, how do you repay user 2? You're going to need payments quickly from users 3 and 4. Then how do you pay users 3 and 4? You need quick payments from users 5, 6, 7 and 8.

This will go on forever until there are not enough bitcoins in the world to let it double. That's the problem with queues. It means everyone will get a payment, so no one has any motivation to get others depositing.

The thing with Cryptoboost is that the payment expires if there is not enough to fund it. If there is enough to fund it, they'll get their return and redeposit. This allows for the game to be continuous and infinite since everyone wants to see their return, so they'll do whatever it takes to get that. Whether it means inviting their own friends or depositing more on the site to get that payment.

Here's a commonly known ponzi that cannot pay anyone out because it used the queue system: iznop.com

It has about 50 over 1 btc transactions waiting. No one will deposit in this case because no one trusts it anymore.

Here's a commonly known ponzi that can pay people because it's using the same recycling system: flexybit.com or if you remember honestdoubler they used the same system as well. Problem is that the admin wanted to scam and so he did. The only thing you need is an honest admin to run this site, and with Cryptoboost you've got that.

So no, a queue system would actually destroy the site. Just keep inviting and depositing logically and you will see a return!