The purchase was more than obvious to most tech nerds... they bought it because of the whole patent war. Google could care less about Moto hardware (or software). Google has been searching for Patents.... Moto has had patents for almost 10 years now. Google simply bought Moto to control the patents so it can fight Apple's onslaught on HTC, Samsung, (soon Moto) and anyone else using android.
Apple has successfully blocked the samsung Tab from being sold in the EU, and its working on blocking HTC tablets and others soon.
With over 5,000 patents that motorola has... it now has an army to finally fight back and defend all the OEMs. That or scare the crap out of apple enough for it to back off and leave android alone in the whole "copy cat" game apple is claiming.
Google has stated it will not mess with Moto much if any at all, the buy out was for the Patents plain and simple. But, come on.... they have to nudge a little. =-) You buy a toy, you just gotta play with it once in awhile.