Is there a legitimate method for saving/restoring installed games on Wii after the shop is shut down in 2019?

Nintendo is planning on shutting down the Wii shop services in 2019.

After March 2018, you can't buy points anymore, and after January 2019, the channel itself will cease working. This also means that the only legitimate way to redownload stuff you've purchased will go away at the same time - effectively making the Wii a disc-only console.

As someone with multiple pages of purchased Wiiware and virtual console titles, this is concerning. If my console dies, my games die with it.

I want some way to back all this stuff up in such a way that I can restore them if my console ever dies. Unfortunately, it seems like all the ways to do this are at best unofficial, at worst go straight into piracy.

After 2019, the "unofficial" bit won't matter anymore, since the console won't have any way to talk to Nintendo's servers, and so there's no risk of negative consequences to my Nintendo account.

Nintendo's FAQ doesn't give any good answers here, and I fear they don't exist.

Is there a way to do this that doesn't take me into piracy territory? If I have to mod the console, that's fine, but I'd prefer some kind of application that could dump my games onto the SD card and modify them so they work with the new console.

_{Question note: This is not a duplicate of this question. That was answered in 2010 and it is likely the situation has changed sometime in the intervening 8 years.}