Trouble is, she's there to mop up Brucie's meanderings, so it's difficult for anyone to appear natural. Even on the taped show he still looked lost at times and fluffed some of the cues. Tess is there to listen to the floor manager (Brucie refuses to wear an earpiece so he can't hear the instructions) and translate them somehow. Not an easy job actually and if she looks wooden it's probbaly becuase she's got so many other things going on that you don't see.
Much as I love Brucie, he can't present a live show like this and having a pair who really can, would make all the difference. But, it's not going to happen. No-one is going to boot Brucie out until he wants to go - and fair enough. He is tv royalty after all. I don't personally think he's up to the job all of the time - he never seems to get through one show without going off the rails somewhere or looking as though he's lost his place, but on the other hand there is no-one better to step in and ad-lib if necessary.
Re Tess - I'm no fan and I'd really like them to have someone who can dance presenting the show, but as I said at the top, not that many presenters will work with a co-host who doesn't use an earpiece becuase they end up doing twice the work! Who do you think gets paid the most ?
There's a lot more to it that just how they look - and even then I think they rae incredibly mis-matched.