#3 The gift of the gab
Alexa Bliss is one of the best Superstars on the microphone, male or female, cutting promos with panache. She has even excelled in shutting down the 'what' chants directed at her on more than one occasion.
Remember the moment after Alexa Bliss won the first ever Elimination Chamber match for the women and broke down in tears in the middle of the ring? In just a few moments, we saw that the tears were fake and that she'd worked the WWE Universe with her incredible promo cutting ability.
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And what does the role of a WrestleMania host actually entail? He/she has to cut a promo in the middle of the ring, and therefore, there's hardly anyone better suited for the role than Alexa Bliss is.
It remains to be seen, however, if WWE will actually have her work some kind of major angle at WrestleMania 35.