Mega Swellow and 3D Sprites and Elite Battle System like in Pokemon Ethereal Gates

Is it possible to input this?

Note that suggestions shouldn’t be just “Add this mega” without explaining yourself or providing any sort of ideas. 3D sprite-packs exist for this game, but note the new megas and deltas won’t have a 3D model. It’s probably incredibly difficult to make those so I doubt it’d be possible to make them from scratch.

I see. Where to download 3D model? So elite battle will not be possible? What essential version pokemon insurgence?

Elite battling script will not be done as it would require a redo of most pokemon sprites