So let me get this straight, the Russell 2000 and crude oil have both DOUBLED in price since you started trading them and you couldn't (or cannot) make money because of these... "no-good" high frequency traders?
You must be joking, right? I mean this is serious Seinfield material, Austinp.
what correlation is there between notional price of the underlying then versus now? Ten years ago the ER2 cleared 200,000 to 300,000+ contracts daily, and most of it was real accumulation - distribution. Current volume today averages about 1/3 that and is mostly HFT churn. Does it matter if Russell Index is at 2,500 level a year from now but daily volume is 50,000 contracts?
Now let me ask you a question: how long have you been profitably trading mechanical systems? I was writing spot FX systems in 2002 and trading them live. I'll also point out the fact that you are merely regurgitating the "FX is most liquid market in the world" mantra without knowing any more than that.
FX is as liquid or illiquid as the underlying futures market is. Doesn't matter how many spot contracts you can fill if the usdjpy or eurusd chop for two days or rip-spike 100 pips on a fat finger. Your spot position is hit the same.
There are guys reading this thread who've made millions of dollars trading and have written more systems than you & I put together. What you continue to spout here sounds a lot like book read theory and not years of entrenched real-money experience. Nothing personal, but that's how it sounds.