I agree that a blip system needs to be implemented. It would be a small but very beneficial adition.
One critical portion that needs to be updated in my opinion is the business script. There needs to be a way for business such as clubs, bars, and restaurants to make money and serve actual items to players. This would also play into the trucking system as they would need different types of products in order to produce their items. Perhaps other businesses could generate ingredients/products that other end-user businesses would need in order to produce their own items. Truckers would then need to be used to transfer said ingredients to the other businesses.
This would breath life into the ancient business script that we currently have an allow for more roleplay opporunities.