No there are not, I actually used to have the TGMPA class and shortcake UI bundled that caused horrible issues including totally braking peoples sites. I decided its not worth the trouble and just tell pleople they can install it (its optional as you man know)
Not sure why you by “even if you know to look for the download URL it is hard to find.” because I have a dialog in the plugin where you should just click A link. Is that not working?
Apart form that you can also install the 12 Month outdated version 0.6.2 from WordPress org that is pretty straight forward to install directly from the admin by searching. This version however has bug that the button needs to be clicked twice after the dialig was opened and closed I think.
I asked them to do a release but they have still not done one and I am also annoyed about the fact that a “feature testing” promoted plugin is getting no love, I expected more when I discovered this. Do you think its still to hard for people to install this like any other WP Plugin?