Basement

This is part of my overall house renovation.* The basement is in need of a lot of work.* I've started replacing the copper plumbing (it was an inefficient mess) with PEX.* The breaker box and electrical system needs replaced.* The HVAC replacement/upgrade will be next year.* The sump pump doesn't need replacing at this time.* The septic system is being completely replaced.* Lots of work needs to be done, and is being done.

I'm thinking of sealing and insulating the crawlspace walls so it can be left open to the basement.* Would it be a good idea to lower the dirt mound and use it as storage?