If you want to roleplay how you bought some engine nobody's stopping you, that's not what this announcement is about. It's just about how they are treated in terms of applying rules. Bottom line is that swappable engines were set as cosmetic and before they can be made as inRP equipment (as say weapons are) there needs to have enough variety of available choices. For example let's say you're flying faction A ship and there's default engine that comes with the ship (first-party), but there would be like 8-9 engines on the market that aren't specific or exclusive to another faction (third-party). Something like manufacturers from Borderlands, where each has distinctive visual aesthetic and not just be recolors of existing ones. At least that's how I'd like to see it. May be we will and if anyone wants to help they're free to give a try at making engine effects.