I agree.
Left to my own devices, for the Inner Sphere slots, I would go through the intro box and lance pack minis (except maybe the Shogun) since they have all been easily available and relatively common. By the time that's done, we'd be a bit into 2018 and we would hopefully have most or all of the new Classic minis out (either plastic or metal). Other 'Mechs (e.g. the Highlander or Nightsky) could be added to spice things up.
Similarly, for the Clan spots, I would finish the TRO 3050 'Mechs. They should be relatively common (although some will be less common than others). I'm not entirely sure where to go from there though. Maybe into an assortment of 'Mechs from TRO 3055, 3058, and 3060?