"Mind," "spirit," "life" – it's convenient for personal use, but not suitable for a reference guide.
The monster treasure tables in their current form ((10-19)+(20-49)=(50-99)) are difficult to understand; they need to be simplified, especially with regard to game statistics. Moreover, there are good duplicate tables below.
I didn't read about unit movement on the battlefield, but I liked the graphic design.
And since you decided to delve so deeply, take a look at this post /post/477790/ and this one /post/494149/ and consider how to adjust the corresponding sections.
Справочник по НоММ-4 http://handbookhmm.ru/pamyatka-dlya-heroes-iv.html
Памятка по НоММ-3 http://handbookhmm.ru/pamyatka-dlya-homm-iii.html
и HotA http://handbookhmm.ru/vyishla-obnovlennaya-pamyatka-dlya-homm-iii-hota.html