LLP's are also penalized for not hiving enough IPH when LE buildings come out. HLP aren't the only ones but I aggree it's retarded for both LE buildings and the 151+ Boss tier. 1287k Atk is required if you can land 15 atks per boss lv to complete without gold.
300k alliance atk personally I'd say should be the required atk to do it without gold. When im half the required for my tiers i can reach lv25 without gold.