A LONG-SHORT, single-instrument directional strategy on ETHUSDT.BINANCE (USD-M perpetual), applying the diversified conviction-composite construction to the SECOND edge-bearing asset. EVIDENCE: on BTC every single bars-factor lands Sharpe ~0.5 (DSR-failing), and my three BTC composites (queued) test whether diversification lifts them; but ETH is the strongest non-BTC asset — its plain 4H+1D momentum confluence reached DSR 0.76 (Sharpe ~1.30), a genuine near-miss materially above the ~0.5 single-factors and the closest any non-BTC candidate came to promotion. The untried question: does adding DIVERSIFICATION (equal-weight composite of orthogonal 4H factors), SELECTIVITY (composite AND daily-trend agreement, flat otherwise), and RISK DISCIPLINE (vol-targeting + trailing winners) — the survivor's three structural levers — push ETH's near-miss OVER the 0.95 DSR bar? ETH is the natural asset: it has demonstrated edge at exactly this 4H+1D horizon, unlike the choppy alts (DOT/ATOM 0.2) whose confluence had no edge to diversify. NOT the confluence template sprayed on a ticker (L56 — the fast signal is a multi-factor composite, not a single EMA; and ETH is chosen because it HAS demonstrated 4H edge, not blindly), NOT a single-signal probe (all ~0.5), NOT the three queued BTC composites (different asset), NOT the regime-decayed convex family, NOT cross-sectional (L52), NOT reversion (L53), NOT microstructure/carry/basis/options (dead/infra). LOW-DOF: 4 pre-registered equal-weight 4H factors (fast momentum, close-location pressure, volume-flow, range-position), only 3 tuned params (composite threshold, daily-trend lookback, trailing-ATR multiple). Fills long-short (13.5% vs 86% long-only). HONEST framing: ETH single-factors likely also ~0.5, so the composite must clear via diversification of their idiosyncratic error PLUS ETH's demonstrated horizon edge; if it lands ~0.7–0.9 it is another near-miss, which alongside the BTC composites decisively answers whether the survivor's edge is structure-general or config-specific. Risk: ~1.5% equity/trade anchored to the trailing stop; vol-targeted size capped 20% of equity*leverage; 2x leverage cap (reads self.config.leverage).