Would an occasional writer-produced fact sheet filler be an acceptable way to rebuffer?
It all comes down to style, of course, but the occasional fact sheet can also help storytelling, because sometimes the background information is hard to act out with the characters speaking it, without making them deviate from character with all the preaching they have to do... so it's really up to you guys' preference, I think readers will be ok with it.
Of course, the last time I suggested this for a webcomic they then went on to produce 50 pages of text filler in one go... so now it's a serialized novel instead of a webcomic. Please don't go that way
Edit: Just realized that maybe that works best with a writer+artist team...