What about fixing/upgrading the useless trash Legendaries FIRST before adding new Champions ?
Astralith ? Teela ? Warchief ? And there are at least 10 more not worth average epics, let alone legendaries .
It is not like there are not megatons of Champions already so start to fix those that are trash at last.
More useless legendaries means more chances you will buy shards. Flooding the system with useless champs is their way of making money. Or at least so they think.