Note: this is work in progress
Assuming that you have access to Elite opening (opener/VIP status), have a balanced party, good skills, builds and gear that allow you to run Elites at or even above level, how much does the Bravery bonus and new Elite bonus give you? How much does the grind drop?
I had a quick look at the free low-lvl (up to lvl2) quests, and checked how much xp you would get with running each on Elite only once.
Since this is hard, Re-entry bonus and Flawless Bonuses are not counted.
Quest name / Elite baseXP / real XP / bonus (elite + Bravery)
The Cannith Crystal / 244 / 488 / 80+20%
The Storehouse's Secret / 292 / 613 / 80%+30%
Heyton's Rest / 356 / 783 / 80%+40%
The Collaborator / 819 / 1883 / 80%+50%
Necromancer's Doom / 364 / 837 / 80%+50%
Redemption quest / 628 / 1444 / 80%+50%
Sacrifices / 628 / 1444 / 80%+50%
Stopping the Sahuagin / 628 / 1444 / 80%+50%
Misery's Peak / 1660 / 3818 / 80%+50%
Bringing the Light / 334 / 768
Durk's Got a Secret / 1053 / 2421
Garrison's Missing Pack / 879 / 2021
Haverdasher / 412 / 947
Information is Key / 1140 / 2622
Missing in Action / 585 / 1345
Recovering the Lost Tome / 1001 / 2302
Stealthy Repossession / 1131 / 2601
The Kobold's New Ringleader / 1452 / 3339
Protect Baudry's Interests / 464 / 1067
Retrieve the Stolen Goods / 724 / 1665
Stop Hazadill's Shipment / 412 / 947
The Smuggler's Warehouse / 802 / 1844
The Sunken Sewer / 568 / 1306
Walk the Butcher's Path / 1339 / 3079
Kobold Assault / 1528 / 3514
Redfang the Unruled / 996 / 2290
The Captives / 940 / 2162
Sum: 48994
Total: 48994xp
It turns out that with the new xp system, you can get from lvl1 to lvl 4 by just runing every quest up to level 2 ONCE.
Of course, xp boosts and trap bonuses etc. will make you level even faster.
That is a nice change, and would basically remove grind to a large degree. Better to do it right&slow the first time.