Dinosaur Planet was originally meant to have eight collectible Krazoa spirits, four for Sabre and four for Krystal, and each of these spirits would be obtained by each character finding various Krazoa shrines found throughout their respective maps, each containing a challenge or trial testing their abilities or even character. Sabre would partake in the Tests of Strength, Skill, Magic and Sacrifice while Krystal would partake in the Tests of Combat, Character, Fear and Knowledge.

In the final Star Fox Adventures game, this was cut down to only six Krazoa spirits and shrines for Fox to find, with only five of them even being proper tests, those being the Tests of Skill (renamed to Observation), Combat, Fear, Strength and Knowledge. The final "test" is a rather anti-climatic "boss fight" with General Scales, which is interrupted by Andross forcing Scales to hand over the last Krazoa spirit. Unused voice clips and also hints found within the 2002 E3 SFA kiosk, as well as comments from SFA developers on Rare's scribes, indicate that the dev team planned on General Scales having a true boss fight: essentially a rematch against his flying galleon like in the game's prologue, though instead of playing as Krystal flying on the CloudRunner, it'd likely would have been Fox in his Arwing.

As such, looking at internal files for SFA (as well as its E3 2002 kiosk), Rare had also intended on there being one final true test: the Test of Sacrifice, which fittingly enough was Sabre's final test in Dinosaur Planet and its overall final spirit in general. In both versions of the game, it would have involved Sabre or Fox having to "sacrifice" themselves in order to save an apparition of Tricky. Unused hint texts found within the E3 2002 kiosk heavily imply that Fox would have partaken in the Test of Sacrifice right where the General Scales encounter is today, before he freed Krystal from her prison at the top of Krazoa Palace and also before fighting Andross, who he unknowingly resurrected by releasing all of the Krazoa spirits. The music track that was (as revealed by the leak Dinosaur Planet N64 ROM) intended for the Test of Sacrifice even appears as an unused track found within SFA's sound test, and there's also unused voice clips of Tricky begging Fox for help that very likely pertain to this test. Both of these indicates that this was a very late cut.

Internally, the General Scales "boss fight" shrine is referred to as "nwshrine", which adds up considering that the Test of Sacrifice was meant to be found by Sabre at the Northern Wastes (now now as SnowHorn Wastes) in Dinosaur Planet.