With the new upgrade there are rare spots with resources and at 45 simultaneous workers they stop moving for a second move again and repeat this process
A few ideas:
"Zoom" function - after a certain amount of ressources the stashes and ressources transform into castles and for example mountains and forests
Average xxx information - show the average time, ressource gain, etc. that is left until all souls dissappear in the user infterface.
upgrade adjustment: make sight more expensive or land cheaper. why would you need 500 land for 50 souls when 500 land costs around 200.