Hi, I have a few ideas: for the V2 engine.
1. Revamped Inventory system - A new cleaner inventory, imadd.php, itemsell.php, itemsend.php, iteminfo.php, itemuse.php, equip_armor/weapon.php All coded into 1 inventory.php file, With sorted Item Type categories to display the items.
2. Revamped Crimes system - criminal.php & docrime.php into 1 file, Crime outcome gains are random (set by staff at a $min/$max per crime for money, crystals or even items.).
3. New Gym - Revamped look and feel, Revamped formulas, Built in "Gym Pass" that means in order to access the gym the user must agree to buy a gym pass, They pay for an introduction ($introprice is set by developer), At the end of each month the gym pass cost will automatically be taking from them, Gym pass cost isn't the intro price.
4. Basic Raffle System - The winning ticket will be drawn every hour (or 24 hours your choice), Winner will receive the jackpot (total amount of tickets purchased by users) and 5 crystals, Raffle tickets cost $100 for example, You can only purchase a set amount of tickets per raffle.
Also on the page where you buy tickets it will show you the "current jackpot" which is the total price of all tickets sold during that hour.
Winner would receive an event saying "Congratulations, You have won the raffle jackpot - You were given $blah!"
5. Basic User Trading System - Users can open a trade with another user, In this trade they can add their items, money, crystals so on...
Once added what they want to trade, One clicks accept, and the other user must also accept the trade.
Once trade is complete they both receive there things and an event saying that the trade has been finalised. (Trade's can be cancelled by either user at any point - Unless they have both accepted...)