I am very keen on doing starts with all kiters at the same time... have a look at videos of PKRA races such as this one:
... having 10s of kites all together looks awesome fun to be part of, and even just to watch!
Also, I think if we go one at a time it would not be completely fair because the wind will be slightly different each time, and there would be the hassle of timing each rider, and also each rider would not know how good or bad it is doing until the results are announced...
Of course, getting tangles is a risk, and in the racing series in Europe or US, it is recommended to be well powered or have a park&ride type of kite, as you don't want to have to work your kite and be in the way of all the other competitors... but at the end of the day, what we want to start with at this stage is just a race format suitable for a good laught so no big issue I think... riders will just have to take it easy on the start and avoid too agressive kite flying on the first few tacks.
In regards to handicaps, I think this is a valid thing for a mature sport whrere standards are clearly established, but I would personaly find it a bit constraining for our sport at this stage, and I would also love to try and encourage people to make prototypes boards, kites, line lenght and try them out... for the fun of seeing what works best, and without trying to penalise the ones who are trying new things...
let's do some tests and see what format we like most for our sport!
cheers
Jacques