[TL:DR= There should be a campaign consisting only of IC that is always open to all alliances so that those who pay for the DLC can enjoy it at any time the way it is on PTS now, a 3 alliance free for all, with some controls to prevent it from becoming a TV farmfest. [/TL:DR]
In past discussions about Forward Camps in Cyrodiil and alternatives to them, the argument about there needing to be a penalty for dying, in the form of a long trek back to the battle, so that the others in battle have the sense that they eliminated you from the fight, always comes up.
And in the context of Cyrodill Keep battles that is probably correct.
But folks are having a blast in Imperial City in its present 3 alliance battle format. All day yesterday we were jumping into the fray, dying releasing to the spawn point, and running about 30 steps toward another alliance's spawn point to meet them running back from theirs and jumping into the battle again within seconds of dying. It was great fun. A great way to practice things you were afraid to do in Cyrodiil because of the "cost" of it not working out.
The cost in IC is that you lose the TV stones you got from killing the NPCs that constantly get into the battle, making it a 4 way battle.
Not saying that regular Cyrodiil should be like this, but having the alternative is sure fun.
But, when IC goes live, this battle mechanic is going to change from the way it is on PTS. Still going to have its fun moments, but connecting access to Keep status could really limit access. We've all seen some campaigns mired by an over powered alliance, where the others could rarely get a few of their main keeps back before the dominating color just rolls in and wipes them back. In these campaigns, the other 2 alliances will rarely see IC. On the rare occasion when they do, it will be for a very short period of time. If fact, when they enter IC, they may not be able to root out the dominating alliance before access is blocked again. And many will login only to find them locked out all the time. The alliance may have got in for a brief time, but if it does not align with your work schedule, you literally could never see IC. Not good if you have to pay for it.
In the live IC, your alliance is alone with the NPCs of IC, farming them for Tel Var stones, and potentially weakening your alliances presence in Cyrodiil. You die, lose 5% of your TV stones, spawn, and run back to join your group. Another alliance wins the keeps needed for access and comes in to join you. An all out 2 way battle ensues. But when you die, if you are not the alliance with access, you spawn outside in Cyrodiil, you are out of the battle.
Either the battle will slowly tip in favor of the incoming alliance as players are kicked outside, or, the already dominating alliance is able to keep the new alliance from getting a foothold and they are never able to accomplish anything in the IC they are supposed to have access to and then they lose the keeps needed for access and wow, wasn't that a fun gathering of TV stones, oh wait, you lost them all when the entrenched alliance killed you.
I can see groups of the entrenched alliance hiding for a few minutes why their team mates go get the keep back that allowed the other access, then pouring out and kicking the newly arrived alliance out. There are a lot of ways this could be very disappointing for all but a few. And if you paid for this?
I would like to suggest that an additional campaign is created that is all about IC. When you enter, you spawn inside IC at your alliance's base camp, bypassing Cyrodiil completely. It is always open to all alliances and functions just as it does now on PTS. The exit that takes you to Cyrodiil instead takes you back to the zone you were in when you entered the campaign.
So that this is not just an easy farm for TV stones, there could be a reduction in the number received, an increase in the numbers lost on death, or a house cut when they are deposited, so the win rate is the same here as in the regular campaigns.
This would be a place those who are locked out of IC can go to enjoy it, and get their money's worth if they have paid for it. There will be a lot of players who do not pay for the DLC for this very reason, this campaign would alleviate that issue.
In the future, the tower in the center of this unique campaign would be a great place for the addition of a PVP arena.