[Crono]

People won't like their money being thrown away. Taxes work in real life because they are put towards something. Using "tax" as a way to burn people's money is not good. Specially on a GAME, you know.

The very fact that people are able to collect such high amounts of money shows a flaw in the server itself (apart from glitch abuse); it lacks content. Here's some very basic ones I made up on the spot:

What happened to playerhouses? Upload more, add a monthly fee to all homes. Allow players to do more with their homes such as growing gardens, buying furniture, and possibly even adding pet dogs that you can take for walks (simply for the purpose of showing off your cute/ugly animal). During winter you can have your dogs pull sleds, just for fun. Furniture could be used to store your items without having to worry about other people stealing your stuff (have an option on furniture to lock it to your account or let anyone access it, should be easily toggled).

Cars? Make more, and have them for different price ranges. Offer different levels of performances for different cars. The base ones you have now are what, 10k? Make new luxery ones that support carrying 4 players and make them over 30k. Have supercars (one of the staff has his own Ferrari parked in the parking lot building, way to go you selfish bum) worth over 100k.

Skateboards are a very fun feature on Era. Expand on this, add parts to skateboards for stat bonuses (such as speed and airtime) that are a bit pricey for what they offer. Make normal objects interactable with the skateboard NPC. (grinding any table, ramps in various places, etc).