Doesn't make sense to as there are only two areas where Universal has full control without having to get permission at IOA. Remember they did HHN at IOA back in 2002-2005. Marvel didn't like their IP used for it, Seuss Estate won't because it doesn't fit the Suess brand, and Potter won't get anything more than the possible Death Eater show and trick or treating.
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Comcast will probably leverage their e-sports team and investments to put on a E-gaming festival, their partnership with Nintendo makes me think we could see a yearly event style thing where they showcase Nintendo projects while showing off the nintendo lands/parks, likely do a Star Wars weekend level event leveraging talents from their own products that will happen in conjunction with MegaCon and WonderCon nearby and a Renaissance/nature fair in the spring time. Lastly I see them bringing the USJ EDM nights from USJ where they hire world class EDM DJs weekly for a 2 hour in park dance party.