A review of "A Fool's Errand"

The prince was kind enough to take a look at my latest adventure "A Fool's Errand" 

You can read the review here: 

 https://princeofnothingblogs.wordpress.com/2021/01/20/review-a-fools-errand-osr-skill-curve/

You can grab it here it's PWYW: https://www.drivethrurpg.com/product/309263/A-Fools-Errand

Here's the premise: 

A local jester (Gat) is looking for an ancient tome detailing long forgotten dances, it is called the “Grimoire Of Collected Dance” written by Halin Dwarivsh.  He hopes to take his stage show to the next level.  He hires the PCs to track it down after finding the possible location of the tome.  In return for the tome, the PCs will receive a treasure map and some gold.  The jester is part of a local troupe, (him and his brother).  The brother (Lath) is very cynical and believes this book to be cursed.  He has overheard the conversations his brother has been having, and is quite worried about the outcome.  He has hired a local sorceress to make sure that the book remains hidden.  Unbeknownst to either party, a demon has been on the trail of the cynical brother and is using this tome for his own means.  

One thing that was brought up in the review was the idea of adding the conversion notes for different D&D systems.  I suppose it makes sense that any GM whose picking up an OSR module is going to convert to their system of choice.  In my personal opinion all I really need for a monster is AC, HD and any extra special stuff.  I don't tend to use movement, although I know some people who do.  Since there's only a few things that all the OSR types agree on (mechanics wise), it makes sense to only really put them in the adventure.  Alternatively you can always write for a "specific system", provided you have an ok from the publisher.  In my opinion this does pigeon hole the adventure a little bit, but it also has all the information that one would need to run it. 

What are your thoughts on agnostic osr adventures?