Trouble is, none of these ideas have an aweful lot of value unless you have some (back test) numbers to support them.
I can't tell you how many times I have looked at an intraday chart of FDAX (or ES, NQ, ZN, etc) and come up with some simple ideas that make money whilst eye-balling the chart.
Then try coding the ideas and testing over 3+ years of data (vs looking at a few days like you are doing here). Most ideas have proved to be garbage. I find this a depressing experience, but a neccesary one!!
From you initial post it seems like you are aware of the pitfalls of curve-fitting etc but you have not backed it up in practice.
Don't get me wrong, some of your systems may be perfectly valid. But test over a large quantity of data - don't just post a graph of one day to show how effective the idea can be.