Better upgrade options - Features without books?

Would Logos consider a multi tier approach to upgrades with sliding cost? Many of us would like the Logos 8 features, without hundreds of new books that we will not use. Here is an example using the Silver package:

1. Full Silver upgrade with engine and books - $600
2. Silver feature upgrades without books - $100 (or something similar)

This is only one example, but I am sure the community would be interested in some upgrade options vs all or nothing (outside of the skin ver. upgrade without the features). If there is something similar in place, and I have overlooked it, please let me know. 

Thanks, Mike