Since we’re now on version 2.2, can we have the myOpenHAB go directly to our sitemap, and not require the:
"You are using openHAB 2.x. Click here to access your openHAB’s dashboard"
perhaps is should read:
“You are using openHAB 1.x. Time to upgrade! Click here to access your dashboard”
Thanks,
Matthew
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Disregard, bad answer 
Then there would be no way to actually administer the myopenhab.org account itself (e.g. setting up or changing uuid/secret, adding/removing users, monitoring events, etc).
Some people use myopenhab.org for more than just access to their sitemap. What about those who want to access PaperUI, Habmin, HABPanel, etc?
I really think the solution is to save a bookmark with the full path to your sitemap rather than making all these other uses more difficult or impossible.