Consider the fee is monthly/annually as opose to fight by fight, does this alter the approach to matchmaking? Hearn/DAZN are looking to build a platform, rather than fighters. Does that change the approach? E.g. No longer looking to protect/build fighters, but just put on the best fights possible?
I don't think it will change the way fighters are built. You can't run before you can crawl. Fighters need learning fights. At the highest level if you fight twice per year you will expect a high level every time you get in the ring but 3 or more times you will always have a stay busy fight, there aren't enough high level fighters in every division.
Michael Benson wrote (so it's rumors, not confirmed) that it's a 1 billion dollars deal (per 8 years, though). 1 billion per eight years is 125 million a year. Or about 10 million dollars a month. Or about 2.5 million (as their budget) for each weekend.
Hearn reckons they will have 12 regular cards with main events equivalent of Ward vs Kovalev and 4 mega events lol. Bold statement, hopefully it will happen
Also US viewers will have access to every matchroom UK card, which is 30 cards on top of the 16 US cards
I don't think it will change a promoters approach as I think to build the platform you have to build the fighters. Hardcore fans will always watch pretty much every fight they are given these subscribers will build the base of the platform but to get the casuals to subscribe you'll need to get high profile fighters to catch their attention. Casuals will mainly follow certain people, they are more a fan of the fighter than the sport itself, so it's still important to build certain fighters. So I don't think we'll see better match ups because of the new platform itself. What may result in better match ups at first is the desire to grab subscribers. So you might see a bunch of very competitive fights at first to establish that subscriber base from the hardcore fans that understand how good these match ups are. But once they have those subscribers you'll see a return to a safer approach to build fighters and build the fan base of those fighters to grab the attention of the casuals who are more concerned by the celebrity of a fighter rather than actual boxing as casuals love to grab onto the coat rails of the latest hype job and to hype a fighter up you have to build them.