There are many who follow the USD and its role as a the world's reserve currency but for the most part it does not affect people in their day to day lives. However, if there are similar events as to 2008 and they are global, then the IMF may be called upon to produce liquidity in most markets via the issuing of SDRs. A key detail is that the BRICS nations together will have over 15% voting power and thus a veto(https://en.wikipedia.org/wiki/International_Monetary_Fund) and may use this as leverage to change the role of the USD (petro dollar) which they view as an unfair advantage for the US.