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Hmmm.. seems to be a very common issue. How about creating script that fires the map load on a div that loads a static map image instead of the iframe by default? Then using a simple function switch that image to the iframe of the map. That should do it for the "sorry we have no imagery here" problem. If it doesn't, you could try using some kind of internal catching to get the static image and save it in your server to serve that as the "1st" image, you can then load the iframe. Hope that makes sense

The short answer is: No. They're not coming back, in the sense that anything has changed or that they carry any more weight than they did last year. All signs point to their continued decline. Google has publicly stated that it carries no positive ranking value. Technically, Alan is correct - evidence suggest that Yahoo/Bing used Meta keywords as a ranking signal more recently than Google. Most of that evidence is 2+ years old, though, and I've seen no compelling reasons to think that it will tip the balance in any competitive situation on Bing. Even that 2009 article basically says: "Sure, use it, but don't expect much", IMO. Here's the other problem - Meta keywords has been used as a negative ranking signal, and probably still is to some degree. In other words, you might not gain much or anything from using it, but if you spam it, you could get devalued. My gut feeling is that the negative signal is much, much stronger than the positive one, and even Google may still use it as a negative signal. I'm certain that Yahoo/Bing has used it as a negative signal (not sure if they still do). I tend to agree that the competitive fears are overblown. Any decent site's keyword targets should be pretty clear - otherwise, it's not a very well SEO'd site. Personally, if you want to use them, use them - but keep them short, sweet, and relevant. Once you do, get on with your life.

Without more details on your ads, and what they said specifically, I doubt you will find much help. When a company sends you a generic disapproval message, it's because they decided they don't want to waste human resources on explaining things that are clearly outlined. Google Adwords/Adsense is the same way. I would suggest looking over the terms carefully again. Sorry, wish I could help more. Maybe link us to some examples.