Your thoughts on letter spacing would be helpful ... general thoughts too ...
I'm not sure about the font in the subline. I guess you're trying to pair them via contrast, but they're so different that nothing really seems to bind them together.
(I must admit I also don't really understand the subline, but that's probably just a language/comprehension issue on my part.)
Also, in the main mark the "LA" makes a huge gap. Actually kerning is kinda spotty overall. Straight-straights (and stuff like "NC") need more space compared to straight-slants. See how in GROUP there is more white between the "R" and the "O" than the other letters, due do the shape of the "R"? And the first word has a lot of slants, which need compensation.
I'd recommend to focus on 3 letters at a time and try to make them equidistant in terms of how much «air» is between them (so first focus on "BLA", then on "LAN" etc.).
Thanks Nina! That is very helpful!