Well, sure. Why not.
But I m mostly interested in Tiers of Play. I saw a description somewhere for 5e, but cant find one for 4e.
It said something like Level X to Level Y - "You begin to travel to different planes now..." etc.
So I was wondering if there is a description like that somewhere for 4e.
Pardon me if I'm blunt, but the "teirs" of play in 4e is pretty hard-coded into the game, I'm not sure how you can miss it.
Heroic Tier is 1-10. Paragon Tier is 11-20. Epic Tier is 21-30. Ya know, ties right into when you get your Class, your Paragon Path and your Epic Destiny.
Personally though, I think 12 is
way too high for a LOTR-esque low-magic setting. Aside from the fact that you'll never see any real benefit from your Paragon Paths as many of their effects come into play at 15+, you'll really just have a lot of powers that aren't going to fit with a largely martial, low-magic world. I'd say that LOTR is largely a Heroic Tier setting. Most of the characters, even the great warriors, are going to be somewhere between 5 and 8. There will be a few "mortal men" above them, the truly legendary heroes, who are level 10. People like Gandalf are exceptions, not the rule. Foes like the Nazgul are magically-enhanced enemies, probably sitting at 12-15. Mortals who were the top of their game, 8-10 in life and have since seen magical enhancement up a few levels. The greatest of Elves probably rank in here too. Creatures like Sauron are of course, Epic foes because they are quite literally, gods. They are high-magic entities in a low-magic setting, sort of like rolling a tank into classical Rome.
Quite frankly the vast majority of characters in the world aren't going to ever see level 5. I wouldn't even wager that Boromir is level 5, at least not by 4E standards. I doubt many of the major characters in LOTR even
have classes. At level 12, I think a 4E party could readily trounce all but a few of the major players in LOTR, and they'd only lose to them if those major players teamed up against the party.