User blog comment:Mineko Charat Lucky/I propose that Flash should really be reworked/@comment-3470201-20130811095559/@comment-3470201-20130812074158

I think the way to increase summoner spell diversity would be to set restrictions on summoner spell combinations such as disallowing flash plus another defensive spell. For example, an AD carry would have to choose between barrier, flash and cleanse. Blink dagger has been considered by riot but it would be way too strong on initiators who rely on flash due to its range, while being way too weak if the range remained low. The reason it works in DotA is because the map is much bigger. In order for flash to be reworked, the game would have to be reworked.