Note that SoM is in fact composed of several variant rules (special scenarios with the fulcrum, 4d6 magic phase, epic spells, monsters and summoned undead or daemons points), so you can chose to use any of all of those variants.
For exemple you might simply play normal games with the extra poitns for monsters (and/or undead/daemon detachments), without the fulcrum, 4d6 magic phase or epic spells. Some players even chose to simply allows the monsters (or at least the thematic options) as rare choices, like a wild stegadon or carnausor (without any rider) in a lizardmen army.
You can also play the fulcrum without the 4d6 magic phase or epic spells if you want.