A diigital currency that is offline? I don't think that will ever happen maybe not these days yet considering a lot that's being built are online and internet is only accessible online. Sure that will be good in the long run as it may reduce consumption and energy but aren't we are innovating most of our technology online now?
Technology is evolving into novel configurations, yet the demand for offline settings has yet to be addressed. It's more like shutting down the internet online; turning it off is altogether different. Offline would serve beneficial reasons for the common people; for those who do not have the financial means to obtain what they require, these Offline servers would be extremely valuable. It will never happen; the impossible has a small amount possibility of becoming a reality. A digital currency that is offline would, of course, be a wonderful addition to the market, but its services will incur additional costs, and we all know that nothing is free in today's society