The Liberalised Remittance Scheme is applicable to Indian residents and not Indian expats whereas Inri is an investment product for Indian expats remitting to India from a foreign country. https://m.rbi.org.in/scripts/FAQView.aspx?Id=115
Yes, we know about PFIC taxation and help investors with Mark-to-Market Accounting. Further, Inri provides tax support as part of the product offering, thereby abstracting the pain of tax reporting.