Activision have just released information stating they made $800,000,000 in 3 months from microtransactions across their franchises, as fans are 'embracing' new content and remaining 'engaged' with the products. I think we can pretty much assume that Modern Warfare will be plagued with MTX's shortly after release especially taking into account the money lost from the pass aspect. I think they'll do maybe four battle passes totaling £40 to mitigate that and then probably something even more aggressive than what we saw in Casino Ops 4 gunsmith related stuff.
The only positive is that Infinity Ward produce much higher quality content than the cartoony trash Treyarch designs which wouldn't even be fit for purpose in most F2P mobile games. I just hope IW can maintain the seriousness and quality of the reworked MW brand, than resort to childish coloured crap and comedy melee weapons we've seen before.