App idea feedback: LEGO investment tracker + brick scanner

I’m building a mobile app for serious LEGO collectors and investors. The idea is to help people who treat LEGO sets as assets, not just as a casual collection. V1 would include: portfolio tracking with market valuations barcode / box photo scanner set details with price history investment signals like Strong Buy / Hold / Avoid discover feed with retiring-soon sets, top movers and market picks Target users are LEGO investors, resellers and collectors who track ROI, retirement dates, resale...