Ok, the big question here is, what are we trying to achieve with TV coverage of the EIHL? I see two possible answers: grow interest in the sport to attract new fans, teams and sponsors, or provide coverage for existing fans.
To be honest, subscription tv is useless for the former. The Grandstand coverage and face off were the best for that as they were things that someone could stumble across and get hooked on. Realistically though in 2023 those aren't things we're going to get. Therefore the league should aim to provide content in preassembled packages for TV sports news (bearing in mind that we'd probably be lucky to get a 15 second slot).
To provide coverage for existing fans, I think that a single, unified league streaming service is the way to go. Provide a league wide highlights package for free, then have extended highlights and live game subscriptions so that fans, say, watch all of their teams away matches.