{"summary": "UK-based investor holding AVSG.L (developed small-cap) and CSPX.L (S&P 500) asks whether adding non-US large-cap (VXUS) or US mid-cap (VO) ETFs is worthwhile given their lower historical returns, or whether to just keep adding the two existing ETFs.", "reason": "No directional thesis with rationale; it is a portfolio construction question without a stated investment view or catalyst.", "ideas": [], "model": "deepseek-v4-flash"}