Right now, forex tradable quantities can be incremented only 1 by 1, where 1 equals 10,000 units or a mini lot.
Brokerage firms do offer smaller lot sizes and incremental quantities.
IB for instance allows to trade micro lots or 1000 units (or 0.1 equivalent C2 size, that does not exist today)
Against futures trading, forex has this advantage to permit really precise money management by adjusting tightly the leverage to match frequently the evolving equity when it grows.
Would it be possible to allow the trading of smaller scalable sizes on C2 ? and enable one decimal sizes ?