Sandbox Mode
"We were wrong to completely shut down the possibility of sandbox mode. Full stop. Our initial argument - that training mode makes for an even higher barrier to entry - makes some behavioral assumptions that many rightly called us out on. Your passionate feedback and sound reasoning, along with a lot of internal conversations around this vision of League as a global sport have made it clear that our concerns only have the potential to become reality if we’re not doing our job. Providing competitive experiences at all levels of play also means we should be providing the right training tools at all levels of play"
Here is what I think: They fear this because it will give players the tools to prove beyond a shadow of doubt that certain champions are much more powerful than others and often quite broken. Then they will be forced to, ya know, actually try to balance the game for once.