Yes, if campaign officials select the new favored location for Obama's July 24th speech, the Berlin Siegessäule (Victory Column). 

Putting Obama’s speech at the Siegessäule would be a smart public diplomacy for three key reasons:

1) "Change" - After the Brandenburg Gate proved to be contentious, other ideas tossed around by the campaign were Tempelhof Airport, site of the Berlin Airlift, Checkpoint Charlie, the only East/West Berlin checkpoint through with non-Germans were allowed to pass, and Schoeneberg Town Hall, the site of John F. Kennedy's "Ich bin ein Berliner" speech as well as a rally immediately after the fall of the Berlin wall.  All these places evoke Berlin's Cold War History.  By picking a monument that is both symbolic of Berlin and commemorative of another history (Prussian military victories), Obama's speech would now symbolize an intentional break with Berlin's Cold War past, and, consistent with the theme of his campaign, ushering in a new era for German-American/EU-American relations. 

2) Beginning a legacy - In each of the above-mentioned places, Obama would be in the shadow of American politicans who previously spoke there and also risk the annoyance of Germany's Chancellor Angela Merkel.  By picking a place that is well known but not yet attached to a single historical moment, Obama is able to start his own legacy and leave his mark in Berlin and Europe.    

3) Location, Location, Location - Siegessäule is less than a mile (1.3 kilometers, to be exact) away from the Brandenburg Gate, and more to the point, on the same street. (See google maps)  Essentially, speaking at the Siegessäule is the perfect way to have a speech at the Brandenburg Gate without actually having it at the Brandenburg Gate.  Other factors make it a great location: Siegessäule is right next to Berlin's government burrough with embassies and think tanks within walking distance, and being the hub from which several streets spoke out, the area has ample space to host the large crowd that Obama will draw (unlike the Red City Hall, another contender not affiliated with the Cold War)  As a side note, the Siegesauele is also a symbol of Berlin's queer community - an eponoymous magazine is published weekly with goings on events for the gay community, and the monument is the end point of the Christopher Street Day parade, an annual LGBT parade.