How to Improve the Sandbox Mode
I know it's not out for us casual scum yet, but here's a really good idea.
Over every item, and over every jungle camp, and over every tower, you can have the ability to ping it and pull out a bunch of options for it.
Like, pinging a dragon pit would give you "Spawn: Infernal, Cloud, etc" "Despawn Dragon" "Adjust Dragon Level" and stuff like that
Pinging the Archangel's Staff could give "Adjust Stacks" "Upgrade to Seraph's Embrace" etc.
Pinging a turret could give all those "Does not take damage" "Does not deal damage" options we already have
Pinging Veigar's Passive could give you "Adjust stacks of Phenomenal Evil"
It's just a way to make the options a bit more interactive and not bound to a single list.