Actually I think using the correct genotype (het pastel, het spider etc.) descriptions will benefit the newbies the most. Some of the people who where around to learn genetics when the only snake morphs where recessive will never get the idea that a het has to look normal out of their heads. At least the newbies have a chance of understanding that heterozygous JUST means having an unmatched pair of genes and doesn't necessarily mean normal looking or half way to a "super".
What if spider does prove dominant with a homozygous spider that looks just like the heterozygous one (or if not spider maybe pinstripe)? The homozygous spider will not really have a "super" appearance compared to a regular (heterozygous) spider if it looks the same so I don't think it should be called a super. I think at that point the genotype terms of heterozygous spider and homozygous spider will be the best way to distinguish between the two. Then you can use the same genotype inheritance rules that apply to all non sex linked morphs to predict the chances for each egg. As crosses involving two or more morphs of the varies types (recessive, co-dominant, or completely dominant) become more common it will be helpful to remember the one set of genotype inheritance rules and then match the phenotypes up at the end depending on mutation type.
These one mutation at a time genotype inheritance rules apply to all non sex linked morphs:
1. Heterozygous mutant X homozygous normal = 50% chance heterozygous mutant, 50% chance homozygous normal
2. Heterozygous mutant X Heterozygous mutant = 25% chance homozygous mutant, 50% chance heterozygous mutant, 25% chance homozygous normal
3. Homozygous mutant X homozygous normal = 100% chance heterozygous mutant
4. Homozygous mutant X heterozygous mutant = 50% chance homozygous mutant, 50% chance heterozygous mutant
5. Homozygous mutant X homozygous mutant = 100% chance homozygous mutant
If you can remember these 5 rules then all you have to do is remember the mutation type (recessive, co-dominant, or completely dominant) and figure out the genotypes of the breeders at the start and the phenotypes of the offspring at the end.