Hi Ivo
I would like to suggest 2 items:
1. in the slideshow particle - a field to load a banner instead of the image. at the moment I am loading a banner module in the description.:
https://www.awesomescreenshot.com/image/3334564/bf48a8b57d75bcd3e9bdd2ab30b16565
2. In the your particle page:
https://www.awesomescreenshot.com/image/3334570/2433d733fe7b735b8656526b1001f577
I would suggest to add all Joomla particles under the Joomla tag ( not just the Joomla content particles) and the same for WP and Grav. You have many particles now and it will be easier to narrow down the long list that is keep growing. :-)
Thanks
Best Regards,
--Giora