I’ve thought about doing this before, except I’ve never actually tried implementing it. Try it and see how it does. Who knows! I’m sure someone out there has though.
I think you will find that using loads of indicators won’t actually increase performance at all. Many indicators describe the same aspect of price action, so having more than one of them from a given category doesn’t actually provide extra information.
The key here will be on your portfolio of indicators and what they tell you before adding a point. Some indicators might even have to subtract a point depending.
Also some indicators give false positives that need filtering e.g. the output of parabolic sar is not a certain signal in a ranging market, and stochastic crossovers can be false signals when occurring against slowing momentum (e.g during overbought or oversold).
An interesting consideration is trend. If we agree that your trade should be with the trend, then having a trend indicator immediately renders one of your variables 0 as despite all other indicators only one opportunity (long or short) would really exist if trend matters to you.
I don’t quite do it with summed vars as suggested here but my system does make use of 12 trade barriers. My system is willing to open a single position every trading tick throughout the day. The only thing stopping it are 12 barriers which are not summed as I don’t check later barriers if earlier barriers fail making the critical loop logic faster.
Get your concept coded and see how it gets on. Conceptually, it’s nice. Implementation and testing will inform any refinements going forward.