Thanks for the kind words.
Since you seem to have experience with Little Nemo in terms of hacks, would you say it would be possible for you to add more frames of animations to some sprites?
Always nice to see another Mesen pack in development. As far as adding frames goes, I agree with lyonhrt that the frameRange function of Mesen is probably your best bet. Some information on the function is available here: https://www.mesen.ca/docs/hdpacks.html#framerange
Also, the Castlevania and Metroid Mesen packs use this functionality. So, if you are interested in seeing how some examples work, you could do a "ctrl+find" in the hires.txt files for these packs.
BTW, I ran into the same issue with RHDN regarding hosting a Mesen pack. Google drive worked for me, but Dropbox should also be fine.