Put them in your mediavps_3612 folder rather than their own mods. That's what I've done for a few of the recent mods, like the sobek, and though I'm yet to test the new Arcadia, I'm sure it'd work fine.
VP files can generally just be dropped straight in to the mediavps_3612 folder, but if you'e including anything that's not packed up, make sure you retain the existing folder architecture mediavps_3612\data\models, data\maps, data\tables etc. etc.
Well, dropping the files into mediavps_3612 folder is probably faster, but is it in any way more efficient than putting the new models (at least the ones that are packed into *.vp) into separate folders and then modifying the mod.ini of mediavps_3612 to launch everything at once?
