From a fun perspective, Rotting Roots may be the G.O.A.T. of Tier 2 modules. It's hilarious, absurd, dangerous, and has more than one cool plot twist. Whenever there's a Tier 2 emergency, I love to bust this one out; EVERYBODY loves Rotting Roots. If you buy into this, your players will love this module. The loot sucks, but that's what White Plume Mountain and Amber Temple are for...
[5 of 5 Stars!]