May be
@Tejas Khoday can confirm it what I have understood is that the problem is simultaneous orders fillings. Thinkorswim had to tie up with a market maker who would fill the orders 1 tick above the theoretical price. In India I do not know if such tie ups are possible at this point. It's really frustrating to see my broken wing butterflies make money week after week but all in excel as I do not have the large margin amount to trade them. Wish the market regulators understood what it is like to trade in the actual Market.
That is Level 2
Even if the broker platform can write a simple wrapper over their current order window, and execute all trades at MKT rate and lock all legs the way CO/BO works,
where you canNOT square-off or cancel, only Exit works and take care of
reduced Margins (say even down to 15-20% from current levels) the entire trading community will be happy.
This small step can work without Exchange or Regulator interfering in Broker's business.
Flipside is most Disc Brokers have Omnesys etc as their Operator over which their platform works, so they have to do a lot of brainstorming.
Ofc, if one trades a short straddle spread (then calls it hedged
) and expects significant lesser margin can go find a new exchange