Love this archetype, always played with it. This is a version that I ended up playing in ranked Master Duel. Not a Meta deck, but a fun one to play with. Main objective is to have a Daigusto Sphreez and a Gusto Gulldo on your field and a big monster on your opponent side of the field, than splash your monsters on the opponent's monsters.
Gusto Griffin is a great engine to special summon new monsters. Cards like Wynn the Wind Channeler, One for One, Forbidden Chalice and Tailwind of Gusto (on the grave) make this engine work. Sometimes i like to summon Gusto Vedir to send Gusto Griffin to the grave, than find a way to summon Daigusto Sphreez to bring back Gusto Griffin to the hand so I can discard it with another card.
Windwitches have some great synergies with gusto. You always want to start with a Windwitch - Ice Bell in hand. With only one card you can summon Crystal Wing Synchro Dragon. You want Wind Pegasus @Ignister as a material, so when a monster you control is destroyed, you can activate its effect on the graveyard. Pilica, Descendant of Gusto is amazing with these cards, after summoning a crystal wing, you can summon pilica to special summon Windwitch - Glass Bell and make another synchro monster.