item that shoots you into the air and then you glide is from WOD
https://www.wowhead.com/item=119093/avianas-feather the forward glide is somewhat nerfed from what it was in WOD. no clue why blizz did that.
blizzard declared war on BOA heirloom gear going into TWW. again no clue why. at level 10 they are like 6-7 levels lower than quest greens/blues
you have to look at the vendor at this late point in remix and decide which few MOP heirlooms to target. they cost 2 bones of mannoroth
(1 normal, 4 heroic, 10 mythic), you would need 22 to get them all and 8000 bronze each one.
getting into a mythic may be rough. good way to get bronze is getting the daily quests for dungeon/LFR, etc. do a normal and herioc, one LFR, and one scenario once each day
discovery each zone awards i think 500 each zone. day one kill all four of the celestials, and one each day after. kill the 3 world bosses. kill Ordon at timeless isle daily. some players farm mobs at and around the ordon sanctuary