I'm aware of my long lost posts, I'm trying to tell you that it doesn't matter when you step in if the intended step in point is below your skill level.
Let's say that you have done FotM 1 and Fotm 28 (just those) and now you have to go back to FotM 10. If you're able to complete FotM 28, you'll be able to complete FotM 10.
I completely understand that there will be some new mechanics, what I'm saying is that if I'm able to step into a dungeon with this new mechanic at a much higher level, I should be rewarded instead of forcing me to just grind all those levels out again.
A reasonable compromise in my eyes would be something close to what Zito thinks is happening. You make it so only your rewards are down-scaled to 30. If you do FotM 10lvls above the level of rewards you advance an extra level in rewards. If you do it 20lvls above the lvl 30 cap you advance two extra levels, and so on.
An example to simplify it a bit: Everyone's rewards are at lvl 30 come patch but you can still enter 30+. If I enter lvl 30 and complete it I get rewards for lvl 30 access to lvl 31 rewards next time and a personal level of 31, If I enter lvl 40 and complete it I get rewards for lvl 30 access to lvl 32 rewards and my personal level remains 40, If I enter lvl 50 and complete it I get rewards for lvl 30 access to lvl 33 rewards and my personal level remains 50.
This way you don't get loot inflation by people like me but we also get a reward for our hard-work in the past.
The only added difficulty comes from one mechanic, knowing the base mechanics of all fractals means that it will probably be some form of penalty that doesn't require you to dodge (most fights are already tuned around having just enough dodges and endurance regen to stay alive).Every level starting at 31 will have a new instability to conquer. This instability is tied to the fractal level, so it will be the same for all three fractals and the boss, but will be replaced by a new challenge when you move up to a new fractal level.
This means that what we'll get are some sort of debuffs that are annoying like: Constant Weakness, Constant - healing, Constant Cripple, Shorter boon durations, Longer skill CD's, ...
I doubt there will be more than 10 instabilities meaning that at least 8 encounters will be just as much of a grind as the old system.
edit: Yes Maarius like gambits, although Glint/the deep is what popped into my mind
edit2: I know I'm being a tough costumer but imo it's within reason. If your party never quits on you, you don't DC,... it takes a minimum of doing 54 fractals just to go from 30 -> 48. If you've gone higher than 48 to let's say (something within reason) 55 it would be at least 75 fractals. That's 15% of getting the achievement maxed out! (going with the idea that achievements are actual achievements for most people). Each fractal takes around 15minutes if you're with an experienced group so that's 13.5hours wasted, completely wasted. I personally find this a lot.