Signature.
Mine has become the demolition of the top bar. It's constant existence/ lack of customizing is one of the biggest interrupters for some moders.
It really annoys me. It's a pet peeve...

I decided one day to use smoke and mirrors to make it
feel gone. I don't need a volume icon or mSD card icons. The volume is in numbers and I know and have 2 ways to check my mSD situation. I do not need to see an icon of an SD card. I DO need a battery indicator and gain is not really a need but I want it. So take the 2 and make them as small as I can.
This turned out to be a big success. Not a single person up to the writing of this post ...on here or anywhere said....
wish I had that mSD icon....
no volume icon is a dealbreaker....
Never. It's the best work I have done. My attempt at making the topbar a non topic and seeming to succeed is my best get...the one thing I really nailed. Offering custom versions was a good thing but it's framework is pretty dope.

The last of the 3 was a very slight increase in image offset by rotating the text and raising the battery icon to the upper most point in it's area. Keeps the illusion of space.
That and the contrast of the lower levels is the better of the 3 but the text on top in the second was the most balanced.

I am a believer that removal of the extra icons in the launcher help decrease skipping as it is related to U.I and G.U.I
Since I have deleted all but 7 images in the launcher I have less skidding. A lot of themes are down to the magnificent 7 in their launch mod. I wonder if I am the only one who thinks it makes a diff?
I don't know if 2.36 sound any different from 2.40 but thinking seven images to go through 7 points is more efficient than the ....12? 18? in the default launcher....that makes sense.
And I will forever marginalize/hide/draw attention away from the topbar.
I got lucky getting the X5. I don't know if the DX90 or other similar DAP's have the same ability to custom? It doesn't look like they do.
+1 for FiiO
It's 2nd only to the sound......the personalization I mean.