I don’t imagine anything we did to Ascendant interfering too badly, unless they were to throw in a line explaining the potential continued absence of Adam Driver. Or show Leia’s saber in a flashback.
And if the crawl is good, I won’t rewrite it! I didn’t originally for TLJ, until we decided it would be nice to massage in a bit of exposition about the galactic politics going on out there after TFA destroyed Buenos Aries. I do like a good crawl, though, and it just depends, but I’m not petty. (Am I?)