They should have ways to build up the rep required in BfA content if they are going to require it moving forward. Having to go backwards in the game to do new things is lack luster at best. Blizzard has even said they don't like people having to do old content to use new things when they were talking about DH starting at 98. Sure for people playing right now it isn't an issue. Once BfA is live and people coming back or new players want to mess with these races it becomes an issue.
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A title isn't exactly new content. If you are going to go with silly examples you should have went with people "having" to do old content for xmog.