Toplane changes that will make its impact greater

Please make up your own mind before voting. Thank you for your consideration. :)

Teleport has always been the go-to spell for people looking to roam from toplane. This is why it's the staple summoner spell for most toplaners. I have an idea on how to rework it in such a way that allows toplane to be relevant on the rest of the map, without losing their towers top. Please keep in mind that I do not want it to simply be a buffed version of teleport. Rigorous testing will have to be done to ensure that the summoner spell is balanced in a way that allows for consistent, but infrequent roams to the other lanes.

Before I reveal my idea, let me first argue for why this change is needed. Support used to be the role with the least impact in the game. However, in recent seasons, this has clearly changed to toplane. The reason for this is the unreliability of the teleport spell in solo queue. Given the length between top and botlane, teleporting botlane for only a chance of getting a kill has become too risky, especially when you're not coordinated. So most people use it to get back to lane when the enemy is pushing in, to not fall behind in cs and levels.

People have tried to say that teleport is fine the way it is. It's a simple tool that allows you to get ahead, or make plays, but often at the expense of the other. This sounds fine in theory, but combined with the fact that bruisers and toplane champions still have the most expensive builds, and the fact that they're so far from the most impactful lane, botlane, it makes it almost impossible to impact the game enough to carry in the long run, especially over other roles like support, who not only can roam, get extra wards and teamfighting items, but also are right in the middle of the most impactful lane in the game. So without further ado, here's my idea for how toplane can be changed to be more impactful:

I want Teleport to be replaced by a new summoner spell called Gateway. A gateway can be created anywhere on the map, taking 4 seconds to open while channeling, and is immediately visible to everyone. Walking over a gateway will allow the caster to move between the two locations (the casting location and the target location) for the next 20 seconds. When you walk through a gateway, you can't walk through it again for 10 seconds. This makes it so you can only use it a maximum of two times, once to target location, and once back. 330 seconds cooldown.

This allows toplane to join botlane in times of need, especially effective right after they've pushed out their lane top and can't do anything but wait for the lane to push back to them. However, it also creates a risk for the user, seeing as the enemy jungler and toplaner can sometimes camp the original gateway location, waiting for them to return, which makes casting location even more important. The moment they cast it, the destination will be visible to anyone on the map, but not the original casting location. The gateways do not provide any vision either, so you'd have to make sure you were teleporting in a safe place, for instance under your own tower.

So you see, it is possible for the gateway to be better than teleport, but if the enemy toplaner can camp the casting location, they can sometimes force you to not take the gateway back, giving the summoner spell a form of counterplay, not seen in today's current teleport.

Also, do note that although gateway can be placed anywhere, the combination of these three drawbacks (visible right away, higher cooldown, enemy can force you to not return), I think it will be quite balanced, although quite a lot more useful than it is currently. The main draw with this summoner spell is that it can be used without the cooperation of your team placing a deep ward in their lane, which I think will be a really healthy change for solo queue in particular, although it will also work well in competetive, when teams often know where wards are being placed, and therefore can take precautions against it.

And yes, midlane will probably have great use for it too, maybe even some junglers. However, that's the nature of summoner spells, isn't it? They may be universal, like Flash, or they may cater more to some roles than others, like heal, or be completely subpar to anything but a specific role, like Smite. I actually quite like the idea of toplane and midlane both taking this summoner spell, and then roaming bot together. Or even a support taking it to gank toplane with the jungler. The possibilities are endless, and I prefer that over the generic "use this to teleport to lane, because the alternative is too risky 90% of the time".