I've come to that thinking too....the pattern is always the same...possibly a big start and then the line on the graph starts downward, sometimes slowly - sometimes rapidly, as it seeks its inevitable -2.63 or -5.26 destination. I've shifted my mode to focus to the resiliency (or the staying power) of a system or method, which in my opinion at least offers one the time to bail before gigantic losses (ie....to live for another day). This could employ the use of loss limit triggers. Of course there's no limit on the upside. And the loss limit would have to fit the bet selection / progression being used - as the velocities of loss can vary quite a bit accordingly.
Your idea of an "Omni-System" is similar to what I've been thinking about for some time. Mine is more like a "Consensus System" where like members of this forum set up a "workshop" or think tank, seeking to develop an optimal strategy with all the considerations such as a betting method, progression/regression (or whatever), bankroll requirements..ie..and all the other relevant stuff required that I can't think of right at the moment.
A consensus method would require some rules, possibly something akin to parliamentary procedure... and its goal would be the adoption a method (or methods) which the broadest elements of the participants could support. Every voice should be heard or at least considered. Of course trolling and blatant negativity could not be permitted, but constructive criticism should be. With all the roulette savvy and intelligent minds here, I believe we could come up with a really good thing. Also, the interaction with others would be rewarding and insightful. Everyone would have a stake in it, and it would hopefully create a "team" atmosphere. It would take some time..but that's to be expected.