While you have good points, I'll point out that there is a cap on TF, as you noted 400 ilvl (I'm pretty sure it's actually 395 is the cap).
Your second point existed without TF. LFR on the next tier will likely drop 355 (which would be similar to prior expansions) which invalidates LFR, it becomes on part with normal.
Finally, I have difficulties with the third point. I guess to me, TF is a bonus, not something that makes me feel bad. Still rather it not be in the game as I think (mostly because I don't think anything should drop above mythic raid ilvl). But if a 385 drops off mythic that's an upgrade for me, I'm happy, if it's titanforged (I guess it could only be warforged), I'm ecstatic.