Walt Apparently it´s not only "no longer needs" but also "no longer should be", at least if you extracted everything in the folder, upgraded the mods and cosmoteer didn´t start anymore, redownloaded 0.14 and everything seems to work fine now. Taking a wild guess if it´s put into cosmoteer folder one shouldn´t extract everything else along with it, unless it´s crucial to the upgrading process. Well or the contents of the v6 folder are different from the v5...
EDIT:
So I used the actual v6 this time since the last one was the v5 in the v6 package, it seems all laoding screen crashes are gone, also regarding compatibility with other mods. Not sure if I did something wrong but it still doesn´t seem to work outside of the cosmoteer folder, aswell if I do not extract everything in the folder, replacing the already present things in the cosmoteer folder, updated mods seem to crash cosmoteer without showing any error logs. After that I have to redownload the 0.14 again to return the things in the cosmoteer folder replaced by the updated folder to normal, or Cosmoteer won´t start up. Just a bunch of information in case anything doesn´t work as intended. Didn´t do any gameplay tests yet.