Should the UK Champs decide the 6 UK teams for the WHBPC?

This argument is flawed, swiss-style again tries to get the best teams to play the most games, it's completely bias towards finding the best of the best, which means if you lose, you're more or less out of the running.

that couldn't be more wrong. in a swiss round every team plays the same number of games regardless of how they perform, and the matchings evolve so that with each round equal teams are matched up so that there are only close matches and no blow-outs.