I feel as though there is no motive to go for high task streaks. Normally the multiplier for points would increase with task streaks with bonuses at 10, 50, 100, and 1000 tasks but points multipliers max out at 3x. Perhaps the motivation could be something other than points - perhaps a redeemable item(s) for a special store to allow purchasing of special items. I will continue my streak because I enjoy the challenge and it removes the monotony of grinding repetitive tasks.
Current progress: 108 task streak