I think the absolute best thing would be to find a venue that has the best of both worlds. Have a nice space to dance in, upfront; and have good seating arrangements around or in back.
There are several clubs like that in NYC, but I don’t know London at all. I don’t even know if there are any concert venues or dance halls that would work.
For instance, the Knitting Factory show was a mild disappointment (there is no such thing as a disappointment, or even a mild disappointment, with Simon, but it’s the only word that fits) versus the night at Cielo. But then again, the North East crowd he’s drawing is changing, and this is what happens.