The systems you describe are destined to fail and more likely sooner than later because all simplistic systems will fall to statistics, providing huge losses.

A) 30 spin limit for an EC bet -- This arbitrary spin limit does not change the statistics in the least, in fact, it actually increases the chance of achieving a loss because recovery attempts will likely be cut short or will force even larger losses than normal because of the need to achieve "the last coup following 30 spins"

B) 8 step Martingale -- This wins 99.52% of the time, which means that it loses .0048% of the time, which is 1:209 coup attempts and the loss is for 255 units. The longer a person plays, the more likely it will be that their bust outs will be more frequent than expected, making recovery virtually impossible. The fact that a 2 unit win is the stop loss, doesn't change the statistics and 1:209 is still a common event. Playing for "the very short term" only means that the profits will be very small and not worth the risk of the full 255 units which can occur on the very first coup attempt (I have had this happen to me on multiple occasions).

These are examples that Dobble describes as "system vs. strategy", where only a strategy can win. A strategy must include sophisticated and varied approaches & responses to foster debt recovery. Automated & mechanical systems, as you have described, do not provide this and simply fail miserably.