First of all I want to say that this point of view comes from someone who plays only one character and that stayed in the epic level range for a couple months. At the end of it, I had 2 choices : TR or stop playing. Since I didn't feel like TRing and had already pretty much all the lives I wanted behind my belt, I took a break.
Now when I got back into the game I did 2 FoT just to get to a 20th completions bonus and immediately TRed because I know if I would have entered ANY EE quest (out of the possibly 7 or so that are worth it, even less when you play just one character) I would have just quit again. It happened more than once during my break.
Now through this whole life I just completed I also realised that Heroic levels and Epic levels are almost 2 different games. The quests don't feel the same (you vs them power wise), heroic ones offer a much wider diversity when it comes to strategy or moment where a certain class will shine more than another. Past 20, they might be more epic when it comes to the story lines, but that's about it. And epic doesn't mean interresting. All this is bringing me to this one point that why would you (Turbine) penalize someone that still enjoys DDO by the settings that you have defined. If I want to, lets say, grind past lives until I feel like there's enought new content to justify re-doing the leveling in "Epic quests" that I just could barely (and this is personal taste) stand after only a month they were out, why can't I do that without losing something that is not even linked to it.
TRing is a major aspect of the game since it brings longetivity by offering almost infinite (for most) replayability. Honestly, I think it's genious. But since the game has been totally split in two with the Epic levels and Epic Destiny, why not just realise it and let the players decide which part of the game they want to enjoy. If it's about selling the content, at some point or another i'm pretty sure that anyone that is truly enjoying the game will eventually want to see all it has to offer anyway. But it starts with being fair.
Don't know if I left some room for discussion but feel free to leave your thoughts on your feelings when playing Heroic vs Epic content and do you think that it differs in term of gameplay.
Side note on Epic TR: I unfortunately think this should wipe EDs and that in term to Epic TR, you should be leveling from the ground up the ED that you want to TR. If you don't... well that's just stupid. But... to level an ED to the max level, we did go through that didn't we? This is a tough one. Worth alot of thinking. Farming Rusted blades over and over again obviously defeats the purpose of working for your PL since you don't have to acquire the power step by step (lvling the ED) like when leveling from 1-20.
Edit: Typos, bad grammar, etc...