Giving every single mage access to mobility seems a really dangerous idea...

For context, Xypherous has just posted a thread on the PBE Boards about upcoming mage itemization changes.

One of the new items will be the "Hextech rocket belt": an AP item that features an active with a dash. However, as a mage player I'm very concerned that adding mobility to every AP user will have a lot of consequences.

There are a lot of mages that might actually be completely changed with the addition of mobility.

For example, there are a couple of mages with fairly short ranged AoE CC abilities. What if Annie can suddenly dash in with Tibbers? What if Veigar can just jump in and cage your entire team? Even Galio might actually get time in the spotlight with the potential to dash into ult.

Then there are a couple of mages who already have a kind of engage potential, but need to make heavy tradeoffs for it. Azir can engage, but has to get Zhonya's or flash to survive. Lissandra has the same problem, or has to self ult. Giving them a second form of mobility allows for much safer and easier engages.

Then there are a couple of long ranged mages that are balanced around "If you reach them, they are dead". Allowing a Xerath, or a Lux, or whatever to simply dash away and get a second chance will allow them to play more aggressively and get a lot more reward without getting more risk.

Finally, the ones I fear most are the "AP juggernauts": the short ranged mage bruisers that, once they get in range, can destroy you. Allowing a Rumble to dash in or out, giving Vlad a lot more kiting potential, and the worst one of all: the balancing terror called Ryze. Ryze with a dash = pure terror.

This is NOT a rant about all AP champions becoming broken right now. In fact, most of them are pretty weak right now. This is mostly a warning, as I want it to be really clear that this change will likely have a lot more impact than Riot seems to think. Yes, AP users are struggling right now, but this is a huge change and might backfire quite a lot.

TL;DR New AP item with dash will likely have a lot of impact on a lot of different AP champions, something Riot seems to underestimate.