I know there is already an iShares FTSE 100 etf on the list, but I think the Vanguard one might end up just as popular.
The iShares one has better comulative performance for 3m, 1y, 3y, 5y and has 3x assets under management. So it seems pointless to bring in VUKE.
It is useful to have VUKE to support in-sitsu asset transfers from e.g. Vanguard.