Thanks to all involved in the organization of the tournament. And, congratulations to all who participated. It was my first tournament on this site and I thouroughly enjoyed the challenges.
Thoughts for future tournaments:
(1) Instead of 4 best ranks out of 7 everyday, maybe, we can make it 4 out of 5, OR 6 out of 7. 4 out of 7 does seem too "lenient".
(2) Personally, I don't like grids which have solving times in the range of 2-3 minutes. Then, it is more of a typing test than sudoku. If there is a way we can pre-test and avoid such grids, that will be welcome. I would welcome grids where sub-5 minute efforts would be a rarity rather than the routine.
(3) The tournament is a good way to expose solvers to "newer" variations. I have observed that very few people actually attempt the newer variations (e.g. plus or minus, minmax, repeated neighbours, etc.) So, including some of the newer variations in the mix would be one good way to encourage more participation. I think kropki, for example, will be attempted by more solvers now.
(4) Right now, all timings of other solvers are visible even before we start. Perhaps, it gives an advantage to those who solve late in the day (Although, I personally found that my results were better if I solved early in the day). A work around could be to show all timings only after you have completed all seven variants. Till that time you can only see your timings.