I know it's far off, but a small suggestion for whenever you make N64 cases: could you include controller pak slots? Kinda like the memory card holders in ps2 and gamecube cases.
I know there aren't a ton of games that use the controller pak, but it seems like the ones that do take up such a crazy amount of space that you can't really put anything else on them anyway, it'd be nice to be able to store them with their corresponding game.
Cool idea!
I'm pretty sure I can fit a nice mount/clip/walled area, for the Nintendo 64 Controller Pak, in the [SNES] & [N64] & [SNES Game Genie] Game Case [OGC-SNES-N64].
I will have to double check my current design for that case, to make sure I can, before I can make any promises though.
Most of my plans/drawings for cases are at another location, but I should be able to check it out within a couple of days.
How many Controller Pak Slots would be good to have in each case? Only One? Two or more?
I think I can get up to Two to fit in each case, depending on the orientation of the Manual Clips.
Also a special case designed to hold both Hey You Pikachu and the VRU in the same case would be great. too.
I'll add that idea to The List, and pick up a copy of the Game, the Microphone adapter, and the Microphone.
Are there any variations of the Game Cartridge, VRU, or bundled Microphone, that I should keep an eye out for?
I might make a specialized (separate) case just for the VRU+Mic, so it will wind up maintaining the same Height and Depth (but maybe not width?) of the standard [OGC-SNES-N64] cases, so it will look better on your shelves.
I might have to do this, if I can't include Manual Support in an all-in-one design, or If I have to make one or more dimensions waaay too big.
I'll try out different designs/methods once I get a hold of the Game + VRU + Mic.
Speaking of n64 Pokemon Games,
Pokemon Stadium comes with that huge
Transfer Pak thing,
that lets you use your own pokemon from some of the early Pokemon Game Boy Games,
and play some of those Pokemon Game Boy games, through the n64.

I haven't settled on a case design for the Transfer Paks just yet.
There were 2 Pokemon Stadium Games released for the n64, in the USA, and both support the Transfer Pak.
There is only one version of the Transfer Pak, right?
I mean, they didn't make any hardware revisions to it, did they?
Is it the same shape, in all regions?
One of my ideas is to make a case that can hold up to Four(?) Transfer Paks, but no n64 Carts or Manuals,
and try to at least maintain the same Height Dimension of the standard [OGC-SNES-N64] cases.
Is Four a good number? Should it just hold Two?
Does Pokemon Stadium 2 make the first game obsolete,
or does the first game have some features that the second game does not have?