The whole point of island t17 was to make a scheme that was playable on any map type, to help with in game ranks and be entry level for new players to competitive play, but still allow for experienced players to perform well over time.
The question shouldn't be about island or twin, but when will we stop playing with two fixed map types across all schemes and play them on any randomly generated map to help with bringing in entry level players to leagues, and create schemes for in-game ranks.
If you look harder enough at the WL replays you'll find some games played in caverns that aren't twin level.
T17, Elite, and Inter are all perfect for in game WA ranks where the map is fixed and cannot be changed unless you rehost, and is random.
Elite in caverns is a thing! (or was)
The question shouldn't be about island or twin, but when will we stop playing with two fixed map types across all schemes and play them on any randomly generated map to help with bringing in entry level players to leagues, and create schemes for in-game ranks.
If you look harder enough at the WL replays you'll find some games played in caverns that aren't twin level.
T17, Elite, and Inter are all perfect for in game WA ranks where the map is fixed and cannot be changed unless you rehost, and is random.
Elite in caverns is a thing! (or was)