Limitations of paper size when presenting comprehensive visualisations of results
What do you want your readers to take from your 66 plots? You did alot of work? Great so has everyone else.
You say your plots could be used to &quot;be really useful in drawing out lots of conclusions and further questions&quot;. Well that is your job as the author to do in the first place. As a reader if i see that in a paper, then that tells me you haven't analyzed your data and are leaving it to me to understand what your data shows.
Instead i'd either pick a couple of the most interesting/relevant plots to show, or work out how to combine all the plots in to one bigger plot.
I expect a lot of the trends could be presented more concisely simply as text. Are all 66 plots/parameters equally interesting to a reader? Probably not, they might be interesting to someone who is looking to repeat your work in which case i'd just put that data in a table (and put that in the supplementary material).