Add high-impact roadmap concepts

Author: szeitner

ROADMAP.md

@@ -4,6 +4,40 @@ This roadmap captures the major directions for `gex-terminal`. The project is
 still early, so priorities may shift as the data model, provider integrations,
 and terminal workflow become clearer.
 
+## High-Impact Concepts
+
+These are the larger "wow" features that would make `gex-terminal` feel less
+like a generic dashboard and more like a focused market-structure workstation.
+
+### Live Gamma Regime Map
+
+Build a real-time regime panel showing whether price is in positive gamma,
+negative gamma, near zero-gamma, pinned near a gamma wall, or entering a
+volatility expansion zone.
+
+![Live Gamma Regime Map mockup](assets/live-gamma-regime-map-mockup.svg)
+
+### Replayable Market Days
+
+Save full intraday sessions and replay them later with synchronized GEX, price,
+wall shifts, zero-gamma moves, and event markers.
+
+### TradingView Overlay Export
+
+Export gamma wall, zero-gamma, call wall, put wall, and major exposure bands into
+a TradingView-compatible format so users can overlay levels on their charts.
+
+### GEX Alert Engine
+
+Trigger local alerts for zero-gamma crosses, gamma wall shifts, stale data,
+regime flips, and major call/put imbalance changes, with optional Discord or
+webhook output.
+
+### Multi-Symbol Market Structure Scanner
+
+Scan ES, NQ, SPX, SPY, QQQ, and IWM to rank symbols by gamma concentration,
+negative-gamma risk, 0DTE pressure, and the biggest intraday structural shifts.
+
 ## Phase 1: Prototype Hardening
 
 - [x] Add a local mock-data and replay mode that can run without live Tradovate
@@ -71,6 +105,9 @@ and terminal workflow become clearer.
   time.
 - [x] Include a README screenshot or GIF once mock replay mode can render a stable
   demo.
+- [ ] Add a Live Gamma Regime Map panel that summarizes positive/negative gamma,
+  zero-gamma proximity, wall-pinning risk, and volatility expansion zones.
+  Mockup: [assets/live-gamma-regime-map-mockup.svg](assets/live-gamma-regime-map-mockup.svg).
 - [ ] Add alerts for gamma wall shifts, zero-gamma crosses, stale data, and major
   exposure changes.
 - [ ] Add export formats designed for TradingView overlays, Discord posts, and