It'll definitely not have the out-of-series impact that it had in the novels that's for sure. You said it yourself that you hate it when nothing happens in romances until the end. By the time they get through all the side stories and chapter 5-15 of volume 1, we'll be pretty close. It won't
trainwreck anything, but like I, you, and others agreed, it was great how the author took their relationship so far so early in the series and built them up from there instead of just using the same romance recipe as everyone else, which is essentially what it'll be now.