EcoCity is not about returning to the L1 narrative but about showcasing a more realistic problem. That is, some products simply can't run in shared Rollup environments. Trexx is a typical example. Trexx is building a high-frequency, strongly constrained transaction system. Its core is not just simple DeFi contracts but a transaction engine with clear requirements for execution order, matching logic, and state updates. These types of systems fear three things: 1️⃣ Uncertain gas costs 2️⃣ Uncontrollable execution delays 3️⃣ Execution order being displaced or reordered by external transactions. Why is shared Rollup not suitable? In a shared Rollup environment, block space is a public resource. You can't guarantee your transactions will be executed in the expected order, peak times won't be monopolized by other applications, and transaction fees won't suddenly spike, affecting user experience. For transaction-based products like Trexx, this isn't just a slightly worse experience; the product logic itself becomes invalid. What does a dedicated L1 bring? By choosing to launch within EcoCity as a sovereign L1 (Appchain), Trexx gains: 1️⃣ Fully controllable block space, with execution rules tailored to its transaction logic 2️⃣ Stable, predictable fee structure 3️⃣ System performance unaffected by external applications This isn't about decentralization for its own sake but about enabling the product to operate as designed. Many ask, why didn't everyone do this before? The reason is simple: creating a sovereign L1 was too complicated. You had to manage validators, ordering, RPC, browsers, monitoring, upgrades, and operations. This infrastructure isn't something you can solve with just a few contracts; it often requires months of foundational infrastructure investment, which most teams can't afford. So, most preferred to squeeze into shared Rollups, even if performance was lacking, just to get online. What’s interesting about EcoCity is that it makes this path feasible. With the orchestration capabilities of @TanssiNetwork, projects don't need to build an entire chain from scratch. They can more quickly launch a sovereign L1 and focus on their product. Tanssi's role here isn't to promote belief in it but to serve as an infrastructure tool, lowering the barrier from a high-threshold engineering project to a manageable team choice. The value of EcoCity isn't about debating whether L1 or Rollup is better but clearly demonstrating that when applications require strong execution constraints, shared block space itself becomes a limitation. Trexx's choice of a sovereign L1 isn't for storytelling but because it's the only architecture that allows the product to function properly. EcoCity presents these real, already-made infrastructure decisions directly to users. Not a white paper, but a live, operational system.