Since the devs have shown they don’t want to change the GB formation too much, I propose to buff the resource yield to 150 or 200 per raid.
Current GB gives 400 SP, which is quite a bit less than BFC’s 476. With this buff it would be an alternative to BFC, offering more valuable resources (iron, oil, and lumber) at the cost of reduced SP and longer fight times compared to BFC. It also maintains not having the “Click a shock trooper over and over” mechanic as players are fighting a proper encounter for resources rather than a single enemy unit. This would help improve encounter diversity and give players a 2nd option for grinding.