Unless an Altcoin is created to accommodate an extended power outage then none of these coins can be considered an improvement over Bitcoin.
If it is not an improvement over Bitcoin then it is not innovative.
Having Bitcoin and every Altcoin reliant on Electricity and an always on Internet connection is a design flaw.
Eventually we will have a major extended power loss and loss of the internet.
When this happens your coins are worthless.
It is not a matter of if ..it is WHEN !
I have been warning you all of of this since 2013 lots.
Fix your shit guys.
Not only bitcoin,most of fiat transactions today performed using electricity and internet.So,if we think from your point of view, every thing belonging to recent innovations would face loss.There is no need to get scared.