W-engine Or astra yao (spoiler for leaks)

I really like her combat style and I enjoy playing her with burnice and Lucy. I heard atra is busted af so should I wait for astra Or go w-engine. I don't play that often so my understanding of the combat system is not that great. Also I actually don't have any supports apart from Lucy and nicole (in harumasa team). I skipped caeser and pretty much every other 5 star except burnice and miyabi but since I play less I only enough pulls for either the w engine Or astra.