Hey :)
I've moved the other old subpages for last year's Techstorm, so they're now in the right place.
I tentatively suggest that you might want to move the content for this year's event over to Wiki Techstorm 2019, and convert the current Wiki Techstorm page into a very short intro/disambiguation page, to future-proof it all. That way you won't have to do another round of page-moves in 2020! Just a thought.