Running to a dungeon for the 100th time doesn’t perserve world interaction, it just makes people afk and continue on what they were doing until someone else goes and runs them to summon them. By your logic, summons shouldn’t be allowed because think of all that world interaction your skipping being summoned to a dungeon? Who doesn’t like just afk flying in a straight line to the dungeon of your choice for 10+ minutes while tabbed out getting drinks / food?
Forcing RDF to be same server only will not fix the issue of smaller servers having extraordinary queue times.
Not everyone wants to play on a mega server for the majority of their game play, nor should be try to in any way force people to migrate to more populated servers, if they do not want to be on a massively populated server. Cross Realm RDF Fixed this issue, allowing people to stay on their servers with the communities they built up, but still having the option to go run a dungeon if everyone was offline, busy, or in a raid.
The extra awards you harp on about were not bonus rewards, they were reworked daily quests for heroic dungeons, that got applied as being part of the RDF system instead of being a quest you pick up, run the dungeon, then turn in.
We had the same quests in TBC, as we did in wrath that were just daily quests for extra badges and extra gold.
After you ran RDF those awards were taken away, outside of the Call to arms bonuses that were later introduced as an incentive for highly needed roles to join the queue.
If I recall correctly, after you did your daily heroic dungeon, you instead just got awarded a small amount of experience (For leveling dungeons) that got turned into gold at max level so you’d get like 10 gold a dungeon you completed. (It’s been over a decade, so my memory might be slightly faulty on this one)
In all likelyhood if you removed the “Bonus” rewards, people would just use RDF to specifically queue for the dungeons that the dungeon quests were assigned to for that day first, then probably return to what they were doing, leading to absolutely no change. Just slightly more predictable on what dungeon your first dungeon of the day would be.