Out of curiosity, do you guys allow delaying?
A dual wielding rogue should often miss out on sneak attack without the ability to delay, though your larger party size than I'm used to likely helps out. I play a rogue and ability to sneak attack is actually a real restriction without certain setups (ex: stealth, higher level arcane trickster).
Actually, I don't recall it coming up. Or if it has, it came up as "Can we Delay?", "No, you can Ready in 5e.", end of conversation. The players are pretty laid back and wouldn't bat an eye if an old rule no longer existed. They don't get wrapped around the axle on rules. The Rogue would pull out his bow and ready a shot with sneak attack damage.
Everyone in the party has a Dex of 14 or better except the Fighter, and the Cleric now has the Alert feat, so the Rogue doesn't go first too often. At levels 1 to 3, the Rogue and the Bard had the best init at +3 (followed by +2, +2, +2, +1), but now it's Cleric first at +7, then Rogue at +4, then +3, +2, +2, +1. At AC 20, 20, 19, the Cleric, Fighter, and Ranger/Wizard have no problem jumping into melee either. And even the Bard jumps into melee if it is just a single foe (although she has learned her lesson to not do it if she is going to be swarmed).
The small difference in init numbers meant that the Rogue probably went first at best 1 encounter in 5. And at least a third of our fights have been with surprise (most of those in Greenest, but a few out in the wilderness at night and in the most recent dungeon), so that helped the Rogue as well. The Rogue also has other options than sneak attack damage if he gets the first init (the magic dagger has a limited offensive spell, and his Color Spray spell).
But there is another reason it has never come up. The DM and myself are heavily into gaming and know the rules fairly well, but my wife has been playing since 3E and she plays to socialize. She doesn't care about rules. The other 3 players never played 3E and only played 4E for 5 or 6 months (they played Rolemaster for decades, I think there is a Delay action in Rolemaster, but it works differently IIRC), so Delay isn't something really on their radar either. The Ready action is sufficient and they are not predisposed to think about Delaying like someone who played 3E and 4E for a long time.