Due to visa issue Dasun shanaka could miss the entire Windies series. If srilanka wants the new captain to lead the T20I series against Windies Danushka Gunathilaka is the best option to lead our srilanka team in T20. And more over Dimuth is not suitable for T20 format so don’t appoint Dimuth in all format.
Srilanka need aggressive captain to compete West indies. So SLC should appoint Danushka Gunathilaka as the stand in Captain for Srilanka in T20I