What is your reasoning for wanting a better SR?

The reason I ask is 25 bets a week is a reasonable number of bets compared to a lot of systems that get tossed around. Even with just a $500 bankroll if you turned that over once a fortnight (i.e. just $10 bets) with a 16% pot your addidn't $80 to your bankroll each fortnight. Obviously thats over simplified due to losing runs etc but you catch my drift.

The only reason i'd want to improve that SR is if you can't handle mentally the losing runs that 50% SR brings, otherwise i'm not sure why you'd want to change something that sounds solid already.

Anyway thats just my POV