The activity system can be improved as follows:

$1.$ Quality Control: Introduce automated systems for quality checks to ensure consistent quality without relying solely on a Quality Control Officer. This could include sensors or AI$-$based image recognition systems that detect the quality of produce before shipping. It adds value by ensuring consistent high$-$quality produce through automated systems. It also reduces the risk of human error in quality control process. It creates a competitive advantage by enhancing the reputation for delivering premium quality products and it also reduces the likelihood of defective products reaching customers, improving customer satisfaction. It strengthens the inbound logistics process by ensuring only high$-$quality produce enters the system.

$2.$ Delivery Efficiency: Implement route optimization software for the delivery trucks, ensuring that products are delivered on time while minimizing traffic delays. Consider also alternative delivery methods like electric cargo bikes for urban areas. It creates a competitive advantage by providing faster and cost effective deliveries, improving customer experience. It also demonstrates commitment to sustainability, appealing to environmentally conscious consumers. It adds value by reducing delivery times and minimizes fuel costs through route optimization. It impacts the chain by optimizing outbound logistics$,$ enhancing the efficiency of product distribution.

$3.$ Surplus Produce Management: Develop partnerships with local food banks or discount outlets to redirect surplus produce, reducing waste and creating a positive community impact. Additionally, use predictive analytics to better forecast demand and reduce surplus. It adds value to the business by reducing wastage and promotes a positive community impact through surplus produce partnerships. It also minimizes surplus production through predictive analytics. It has a competitive advantage and demonstrates a commitment to sustainability and community welfare and also potentially opens new revenue streams through partnerships for surplus produce. It has a great impact on value chain as it optimizes both inbound and outbound logistics$,$ fostering positive community relations.

$4.$ Social Media Marketing: Enhance social media strategies by utilizing targeted advertising and engaging with influencers to increase brand awareness and loyalty. It adds a value to the Northey Farms by increasing brand awareness and customer loyalty through targeted advertising and influencer engagement and in turn which creates a positive brand image through enhanced social media strategies. Social media marketing has a great competitive advantage as it improves visibility in the market, attracting a larger customer base. It also influences marketing and customer engagement aspects of the value chain.

$5.$ Stakeholder Engagement: Create regular feedback loops with stakeholders and local residents to improve service delivery and address their concerns promptly. It adds value in addition by improving service delivery based on regular feedback from stakeholders. It also helps in addressing the concerns promptly and enhancing overall stakeholder satisfaction. It builds a stronger relationship with community members, customers and other stakeholders. The other main competitive advantage is that it differentiates Northey Street City Farms as a socially responsible and community focused business. It enhances various aspects of the value chain, from marketing and customer service to community relations.

The new or improved activities based on Porter$$s Value Model are important to value creation and competitive strategy in the following ways:

Improved Quality Control $($Primary Activity$)$: Automated quality checks can significantly reduce defects and ensure that only high$-$quality products reach the customer, enhancing customer satisfaction and reducing returns.

$-$ Enhanced Logistics $($Primary Activity$)$: Route optimization and alternative delivery methods can lead to faster delivery times, increased reliability, and cost savings, contributing to customer satisfaction and retention.

$-$ Surplus Produce Strategy $($Secondary Activity$)$: Reducing waste through better demand forecasting and partnerships for surplus distribution adds value by cutting losses, improving the brand image, and creating social value.

$-$ Targeted Marketing $($Secondary Activity$)$: Advanced social media strategies can increase market share and brand loyalty, directly impacting the firm's profitability.

$-$ Stakeholder Relationships $($Secondary Activity$)$: Regular stakeholder engagement ensures the company remains responsive to market needs and maintains a strong community presence. Question: Include a simple model of the activity system, using the $$loose$$ BPMN notation