Originally we tried doing a multiple gametype tourney, but due to many factors this was unable to proceed. Running a 1v1 tourney is much easier to coordinate and finish than a large team-based event, so these two 1v1 tourneys have been a good test to see how much interest there is in a semi-competitive event for BU.
If enough people want to bring back the full tournament, then we'll certainly think about it. We have no plans at the moment, though.