MAS is already integrated into LoL, but it is a bit advanced for their targeted grade level (MS and lower) and is in the "Advanced Simulations" category. Not sure if it would be better to swap out some of the MAS screens for MASB, or deliver everything which result in allowing teachers to choose from 7 different options for covering mass-spring systems.
For #1.
Given that we're now in RC (https://github.com/phetsims/QA/issues/281), I should start working on the LoL icons, etc.
MAS is already integrated into LoL, but it is a bit advanced for their targeted grade level (MS and lower) and is in the "Advanced Simulations" category. Not sure if it would be better to swap out some of the MAS screens for MASB, or deliver everything which result in allowing teachers to choose from 7 different options for covering mass-spring systems.