No, ma’am-mon. That’s not necessary at all considering they went back two expansions prior to Cataclysm and literally just dropped Pandas in the TBC starting areas completely retconning the mainland Pandaren’s
latter first public appearance in MoP. The draenei’s monk trainer was just cataloging some flora on Azuremyst Isles when he witnessed the Exodar smack into Azeroth.
Not hard to shove in a Pandaren trainer in the second village - which mind you takes place several years after you become a worgen.
Goblins? Already set, as it was stated that a Pandaren visited Kezan before.
Makes sense as they have “Chinese food” boxes all over the place on the starting area.
Not to forget to mention the goblin monk in the full tier 13 monk set in the Legion Monk Order Hall.