I also wasn't aware fo the 4 star impact! Not like it's exactly a strateg changer, but nice to know
Seeing as you've included Relief on the spell list, is this guide to include reinvig also? And encumbrance? In particular the difference between melee and spellcasting encumbrance would be useful reading for new players. Likewise the impact of spell requirement and caster level on fatigue, and how gems can be used to reduce it.