I just feel sorry for the die hard Who fans who were probably really looking forward to some juicy details on the Doc's mysterious family relationships, only for it to turn out to be shit. And not even normal shit. It was especially shit.
Of course, RTD will claim they're too funny when they complain.
Martha's interaction with the fish was ludicrous. It was like Sooty and Sweep talking to Sue. Woah.. I just noticed, all the characters in Sooty have names beginning with the letter S. Sooty's nephew was called Scampy iirc. Wow, that's much more interesting than this week's Who.
Anyway, I didn't care when the fish died and I felt sorry for Freema having to act in such a stupid, stupid scene. And as previously mentioned, the ending was obvious right from the word "Dad".
The time thingy that Donna was figuring out did make sense, but it didn't really change anything. 7 days or 7 centuries, they were still fighting a pointless war, although looking back, it doesn't seem realistic that none of them could survive for 7 days.