Do you have the XApp Status applet on your panel? If not, adding it will make some icons look more or less ok. Although it sometimes just displays duplicates of these icons, so there's that.
Other than that, I don't think there's a way to make all icons the same size
I don't no. Not really sure what that is. But looking around the developers said they didn't put it in for a reason
I mean, you can put the applet on the panel yourself, if you want to
Can you provide pictures?
Uh sure 
From Wikipedia, the free encyclopedia
Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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