I thought I recognised ESA, but I've realised I was thinking of ESL, who did a televised Elite tournament several years ago. I suspect this 4-worm normal mini-tournament was cobbled together using players who had come to do speedruns in other games. If they want to do another one next year, people from the online community (TUS, ONL, CWT, FTM) could perhaps travel there to boost it up. I myself would go to London or Manchester, say, but not overseas. A problem however is that playing together on one PC and talking about what you're doing while you're doing it, is not what we WormNetters are used to.
(Edit: the scheme they used was "Tournament")