The idea that projects will lose customers because of redesigning of signature did not sink well in my head. Remember, signature redesign is not changing the project's logo or other of its avatar. It is for cool visibility and aesthetics.
Roobet changes avatar and signature and that have not erased the Mr Roo logo on anyone's mind. And that has not reduced the traffic of Roobet, if it did reduce they would have stopped. But for the fact that they keep redesigning means they are achieving results and even having more clicks. It could be selling point that others are scared to harness.
Thanks for the compliment and I'm glad others have taken their time to clear you on the importance of branding, many projects underestimate how powerful branding is and that's why the fail. Roobet only redesign their signature to include new features when they're available and usually returns to the default signature unless a new update has been added that needs redesigning as well.
There's nothing wrong in doing so but just redesigning because you feel the previous style used is out of date isn't something roobet does and no matter the design, they still keep their brand image intact that immediately you see their signature, you'll recognize it's Roobet. Looking at the yobit example given by jayce, personally I won't wear the second signature assuming the project wasn't filled with the negative impact it has on and off the forum. The second signature designs doesn't look unique, it looks trending but it doesn't have the value the first signature design has.