I'm going to try and lay out my train of thought as legibly as possible. [Mind you I have been on maybe 2 T2 runs, still new here!]

To address this, what you have seen with constant revives wasting countless Energy, I have not. I have gone on a few solo runs where someone else reviving you is not an option, and I will admit I have paid for a revive, 5 Energy, not so bad, 10, ok, once it hits 20, it becomes a deterrent to me, especially as someone who hasn't bought any CE. I don't see how anyone would want to throw away 20, 40, 80, 160 energy etc., not to mention when you are reviving your whole party that quadruples.

Maybe this happens now because Energy doesn't matter and there will be a wipe, but Energy as I have seen from the constant discussion, and it is pretty obvious, is treasured over all else. Like you said most people realize that 20 energy to continue, is not worth it and instead heading back up to haven, regrouping and trying again is a way better strategy.

As it is if you are dying that much you are under geared or under prepared or both. Running through floors that you can kill without dying is the way to progress in this game, along with strategizing and gearing up.

I see nothing broken here.

If someone wants to do a run to a boss way above their level, alone or with a group, continuously dying and throwing Energy at it until they pay their way to the end, so be it. The amount they waste on energy, and time, the benefits are minimal. I don't really know how much you gain from killing Vanaduke, but to use your extreme example, is it's cost equal to 1000 EC or better? (currently 100 EC is at 4k Crowns?, so 40k Crowns to kill one boss)

You said it yourself that it is not the way to play through the game. I can't see this encouraging big spenders to "cheat" their way through the game. I see the doubling of Energy prices as a great deterrent is it is, again if someone is really willing to drop all that Energy to force their way through impossible levels, why not let them. I doubt there are actually that many people who would. I mean you are throwing away abou $4 worth of energy on one run? Why not, keeps the economy going.

Also to note 1000 E if that is the max, is about 8 to 9 revives into it, thats a heck of a lot, and that compounds so its well over 2000 CE then you just start adding thousands. That is a heck of a lot of money to throw away. You don't think that will stop people from doing it?

CE spent on revives should go into some kind of lottery or something if that is the case. Drawings once a week, to some lucky player.

Limiting revives will make it a pain in the ass for me, unless you want to buy me a fiber cable and have it connect my house straight to the DSLAM, even then I doubt Australia has very good connections with wherever the servers located.

Point is, lag makes it impossible to have a realistic challenge regardless of how the energy/revive system works because I end up playing blind most of the time. So instead of trying a system to add challenge to the game at the expense of non-ideal situations, add a system that makes it fun for all!

I don't want to be 'this guy', but if someone wants to waste their money then why would any of us have a say in it? He payed for that energy with his money (or crowns) and so he should be able to do whatever he wants with it. There is literally NO advantage presented by being able to revive that many times. The sheer amount of currency spent is worth far more than anything you can gain from any dungeon by doing it. It's literally just a sink for people to throw away their money if they feel like it, and I have no problem with that because it doesn't detract from the game and it is just a video game.

Simply put, unless they're a scam artist then they earned that CE. Whether they earned it by directly funding the further development of the game or by grinding their ass off (like I do) to buy CE with crowns, it's up to them what they do with it, and you shouldn't have a say in what they do with it because they earned it and you didn't. If it's a friend of yours or someone you know personally that is wasting their CE, you can always just tell them that it bothers you because you don't get to and feel it could be better used elsewhere, and they might listen. Don't complain about what people do with their own virtual currency, you'd be better off using the time and effort making some of your own.

So, you want the devs to retire a CE sink because some people have no control over what they spend? Wat.
The whole idea behind duplicating costs is that players don't defeat areas that are way over their capabilities/gear.
If they want to spend hundreds of CE to do so, why would the devs stop them? They are giving them money, and there is no single area with rewards as good as hundreds of CE.

Say, you spend some hundreds of CE to kill Duke, you get the incredible reward of 3 tokens.
In the long run you might as well just buy whatever you wanted to buy with the tokens from someone else.