For storing value proposition in bitAssets BTS needs to be established, not a startup phase. For now we can expect either speculative invest into BTS or idealistic holding/transacting in bitUSD as a sign of decentralised movement support (or whenever people think BTS is overvalued). Alternatively at current stage, we would have to offer incentives for holders of bitAssets out of BTS beneficiaries.
For remittances though, the bitUSD holding period is short and the amounts involved are regular and not large, thus acceptable systemic risk for each individual transfer - this would keep certain bitUSD volume in useful circulation. So if BTS offered or joined some infrastructure for on/off ramps, then bitUSD utility in terms of value stability, speed, and low fees would become a winning proposition. No local currency needed to start with, people in those countries are happy to hold USD value, and those countries where cash USD circulation is legal should be targeted first, in terms of remittances.
Countries where people aren't allowed / restricted to hold USD is another case alltogether. This is indeed about store of value / access to stable currency. This might also become valuable proposition, but bitUSD would be in competition against BTS itself here. bitUSD is rather stable value, and offers yield, but it should be compared to longer-term investment BTS risk/return characteristics. The marketing focus for bitUSD then should be people looking to hold stable value over time periods over short/medium time periods of a few weeks or months... For those who want a chance to participate in potentially huge BTS appreciation we shouldn't try to sell bitUSD but offer BTS.