I see a lot of people complaining about stock flipping, etc. If HSX were to impliment day trading requirements, as well as free-riding restrictions, etc. If the HSX market were to impliment a T+3 settlement, it would limit a traders ability to flip securities unless they have cash on hand. Of course, options would still be handled the same way.
There are just so many ways that the actual market can lend a hand to the trouble of flipping. If you have violations for freeriding, good faith violations, naked short sales and various other things, it might bring the market movements more in line.
Just an opinion, of course.