http://tahaxan.arcnor.com/
Give it a look over if you haven't already. It's basically a NDS extraction tool which allows viewing of tiles, text and other things using a plugin system. Neat stuff.
btw i feel this a good time to remind you guys that sea of thieves was made by rare, who also made DKC1-3 and DK64, alongside banjo kazooie and conker's bad fur day