Hello Harakoni
I would like to use more the Template:Quote, but if it can be good to have a large font size at the top of pages, it is not desirable in the middle of articles, like on Gastro-analyzer#Notes.
In many places, the "indent" method is used (like on Events#Ambrosia sprout) and it is really not the thing to do, as it is meant for code and words are often cut in the middle at the end of the line. A smaller sized quotation template would be useful in cases like this.
I don't know why it is so big on Rimworldwiki compared to Wikipedia, there is maybe different CSS rules, but I don't know much about it.
By the way, I tried to copy the Wikipedia template blockquote, but I couldn't make better than Rimworldwiki's Template:Quote, so I guess that Template:Blockquote, Template:Blockquote/doc and Template:Blockquote/styles.css can be deleted (sorry for that mess...).
I think that Template:Quote can be modified a little so a font size parameter be added.
It quess that adding style="font-size:{{{size|}}}";
to the <blockquote>
tag would do the trick, but I'm not sure because this template is using unamed parameters, so maybe it could be parameter 4? (I suck when it comes to this HTML part of wikicode, so I don't know how to write the code for this).
The template would have the same behaviour, so no changes would have to be made where it is already used, but adding size=14px
would make quotes the same size as the rest of the article's text.
Also, it would be good to add  :
after the em dash ("—", in front of the author's name).