I think it is time for new void champ. May be someone who can push the void lore a little bit. New void champ will provide a chance for if it is needed to update the void lore. For an idea he should be able to be played as top lane and supp. There is no void support champ.
DHZ2 votesProbably because the design off void champs is boring, purple stuff everywhere.
Riot probably has more creative ideas that they would like to bring to life first.
angelgrozd1 votesi agree that the purple sometimes is too much 
but i think riot will never stop creating champions from any faction . i think they have creation system that helps them decide who will be the next champ
OurLestrade2 votesRek'sai was only two years ago. Considering it took four years for a new Noxian, that's decent.
angelgrozd1 votesyou are right but new void champ will sure come one day
FloRaider421 votesSince Champion concepts are continously developed, postponed and reworked they might not have a good mechanic/theme for a Void champion currently. I doubt that we have seen the last of them though.