I may be biased, but I was curious what others thought of current RS3 dialogue. One of the things I enjoyed about OSRS was that the PC was sarcastic, reluctant, or otherwise different from a typical protagonist. They went along with quests because the end result was the goal, but were snarky along the way.
I have 250 quests finished in OSRS, I quit RS3 after EOC like everyone else so I was going through the years doing quests. I am not sure what current year quest dialogue is like, but some that stood out to me are the ones giving you multiple dialogue options. Two don't progress the quest, one does. It is usually fairly obvious like in Doric and Boric which is the correct answer, which one sets you back, and another is nonsensical.
This leaves RS3 quests feeling generic and for the most part press spacebar quests. OSRS I listened intently when I was learning about Zaros and lore about them. Biggest offender is the Violet seasonal made permanent quest. My immersion was broken upon seeing a random snow zone portal, and my character yelling out the equivalent of "OMG A YETI YOU EAT CHILDREN" and that was how I progressed the quest.
I wouldn't say it would be a priority to go back and change all the quests, or do that at all. But it might be better for the future for both games to learn what one does that people like and take from it. Also wanted to make this post to see if RS3 players feel similar to me who mainly played OSRS for a couple years.