Before we start, yes, of course, J. K. Simmons is absolutely irreplaceable in the role of J. Jonah Jameson. He's the best, and though Marvel already have their Daily Bugle analogue in New York's Daily Bulletin, if they want to show Peter getting his first job, there are few employers more famous than J. J.
Marvel will be keen to divest from those earlier interpretations, but it's important to remember that the Raimi trilogy - for the most part - is held in high regard. Few things might be able to transcend Hollywood's endless cycle of reboots, remakes and sequels, but if any one thing can, then surely it must be J. K. Simmons' Jameson. He's so unique, and while roles go on to be redefined countless times as the years progress, unlike Batman, Spider-Man, or even Superman, it's so difficult to see anyone else inhabit that character the way Simmons did.
With that in mind, along with the fact that Marvel could potentially look to focus on Peter's career in science over his freelance photojournalism, fans would be wise to fret that J. Jonah might not feature at all.
Though, if Marvel were to bring out all the stops for Homecoming, J. Jonah must surely make an appearance. He needs his pictures of Spider-Man, dammit.