System Design Prep: Is this "Day 1 to Millions" scaling path sufficient for Senior roles?

I’m currently putting together some interview prep notes to visualize a baseline scaling strategy, and I wanted to sanity-check my "default" path with the community here. My current baseline flow for a standard scaling question looks like this: **Decouple Compute/Storage → Load Balancer + Horizontal Scaling → DB Replication (Primary/Secondary) → Caching Layer → Consistency Trade-offs.** I treat this as the "skeleton" answer before diving into specifics. **I’m looking for feedback from interviewers or senior engineers:** 1. Is this the right "default baseline" to memorize, or is it too generic for modern Mid/Senior interviews? 2. Once a candidate lays this out, what are the top follow-up questions you usually ask to test depth? (e.g., specific session management, rate limiting strategies, or specific DB bottlenecks?) I'm trying to figure out where the "cliff" is between a mid-level answer and a senior-level answer using this structure or even a entry-level answer these days because smh interviews have gotten crazy Thanks in advance!