I agree the format has worked well and has been more fun.
However I did express my concerns after Queens over using this format with anything other than slams because of the shorter time period. I unfortunately don't plan on organizing any tournaments other than the slams and WTF (which I might come up with something a bit different for). It's therefore going to be up to other people to run the tournaments if they want to play in-between slams.
I personally would advise switching to a different scoring system for the other tournaments. But I guess it should really be decided by the people who are going to be organizing it, because ultimately they are the ones that will be putting the work in. However if anybody wants a new spreadsheet to help make the scoring easier than I'll be happy to assist.
The reason Queens had problems was because of the rain and inability to play late into the night at Queens which disrupted the scheduling. How nearly all other tournaments, especially the bigger tournaments left in the season have lights which enable them to play for as long as needed and are much less affected by bad weather meaning less scheduling disruptions.
I will happily help to organize the Montreal and Cincy Masters events, as I think only doing the Slams and WTF is not enough events for such an enjoyable game. I'm not sure whether we should do the 500's or not, what does everyone else think? I will not be able to organise Washington as I will be on holiday in the US at the time.
I personally think the spreadsheet is pretty easy to run and makes the management of the tournaments quite easy to do. I also don't think the scoring system is that complicated either but it will be interesting to see what everyone else thinks about the matter, as I believe the game is quite fun the way it is. If we can get a few people willing to help manage tournaments then hopefully we will be able to put on a sufficient amount of tournaments, especially the Masters in addition to the Slams and WTF.