Features

Supports SD/USB, MBR, FAT32/NTFS/WBFS storage

Supports Waninkoko, Hermes, WiiGator, d2x (recommended) CIOS

Supports NoSSL patching, plus optionally custom-DNS-free Wiimmfi (not the new 2018-11 Mario Kart patch) or user-defined servers

Partially supports Nintendont (except CISO and quite a few settings)

Supports emunand (if supported by CIOS) for virtual disc games
Allegedly supports emunand (if supported by CIOS) for digital games?