Nothing can be converted to a WUD or WUX file at all, only way to get them is to dump them from a disc. There's no tools, nor there has been any effort in making tools that could cleanly turn the raw decrypted software files into a WUD/WUX file...
Should also mention that if you have ISFShax installed removing the SD is not enough to unblock updates. You need to make sure of the following:
The update folder exists, in the Aroma Boot Menu it should say on the lower right corner that...
Yes, Priiloader has no way to know what time you're supposed to have, nor does the actual Wii for that matter. So when appropriate, you enable the correct hack and disable the other one. Not a big hassle considering you only have to do this tweak...
1. There's no point in using the "always enable" hack when you can have the system settings enabled, enable WiiConnect24 from there, and then the setting will be persistent. Making the other hack redundant. Only way for that to get overwritten is...
The saves for Wii games are always on the vWii NAND regardless of how you are playing the game (disc, wbfs file on a USB Loader, VC Inject). So you don't need to do anything. The save is already on the NAND ready to be used.
Hey, I think you'll be happy to know that I found a way to get an installable WUP from a decrypted WUP. Though this has a few caveats and still doesn't mean we can recover the original encrypted WUP from a decrypted one, the new section goes more...
Yes, you're missing the fact that Aroma has no Homebrew Menu/Launcher, Homebrew apps just show up on the Wii U Menu. You also don't need a GamePad to just open the Wii U Menu.