I think the Alta XMBLY development deserves it's own thread, XMBLY is the commercial portion. Alta is a different development.
Also, I love the name XMBLY. It was the only way to use the word "Assembly" without using the word "Assembly". And it follows the three rules of real estate branding:
1) People should talk about it (Which you all are) even if its controversial. Remember how everybody hated "Ink Block" or have you forgotten? The reaction was swift and it was bad. Which means it was good. Today, nobody thinks about how weird it was. People moving into the failed brand of 345 Harrison actually say "I'm moving into the Ink Block, the new building across the street".
2) Needs to be less than 3 syllables. Good luck to "Cambridge Crossing" or "Boston Landing" for ever getting recognized/remembered or talked about (see rule 1) and for being too long (rule 2).
3) It has to be real, not made up. So what 'really' is this? It's a techie office development in Assembly Square. So 'authentic' names would follow the trope of Assembly Row, Assembly Edge, Assembly Marketplace, etc. So the developer could name this something like "Assembly Center" but that would fail both rules 1 & 2.
"XMBLY" does it all. Slam dunk. The target audience isn't probably you - it's C-suite tech and life science executives (firms with names like XMBLY and not like "Somerville Crossing" etc)
It's good that it bothers certain types of people. As the person who named it, I love that you're all talking about it!