Disagree strongly in this case. As you may know, I am rather critical of the development in the Überseestadt as it fits your description rather well at the moment.
It is a very outstretched and divided development area with about 4 different, but rather isolated hot spots of development and a rather "dead" office feel in the evenings. Apart from a few restaurants, there is hardly any reason to be there after offices close. But this is going to change with these two projects I presented.
First of all, both are situated right next to the city centre, whereas much of the development up to now has been going on at the point farthest away from the centre. Secondly, this last project alone will house up to 5,000 people, plus the Europahafenkopf with about 500 people, plus the area around Reeperbahn with about 300 people. There is going to be schools and supermarkets, all the normal "city" things that are missing in the Überseestadt at the moment. Together with the extension of the riverfront boulevard "Schlachte" which connects said areas to the rest of the city on foot or by bike without any crossings of streets, this will definitely change the way the Überseestadt is being perceived in Bremen.
Just think of two kilometers of South-West oriented riverfront development right next to the city centre in a formerly completely secluded and closed-off industrial area. Then there are the new bridges spanning the Europahafen and the Weser River to connect Woltmershausen (and the "Tabakquartier" which is another redevelopment area in Woltmershausen) to the Überseestadt.
No, as I said, I myself am one of the biggest critics of the Überseestadt and all its planning mistakes, from the filling of the "Überseehafen" harbour bassin in 1998 to the stupid Großmarkt area in the centre creating noise and traffic, the orientation towards offices and rather bland and standard housing projects, the total lack of any kind of public life besides office workers eating lunch, the traffic problems...
It is really not easy to get me excited, but this is one such case. The Überseeinsel thing has the potential for being the single most important development for Bremen in decades.
They show so many public spaces full of people, but aside from having a job in one of the buildings, I see no reason to be there at all, neither as a resident nor as a visitor. It's far away from all places of interest in Bremen, in the middle of nowhere, with nothing to offer that's worth going there.