Rdps and Mdps- balance idea

[Onyxys]

Greetings (yes, I decided to create a new thread, because I have some days of playing time)
I have an idea how to balance melee-DPS classes and range-DPS classes.
Mdps can attack only if close and Rdps can attack if close and if far away. Is it fair? The distance itself is already a great advantage. We know, that now Coil is a rather hard dungeon for Mdps classes. For example developers will design (already) new turns in other way with many boss's ranged-aoe attack. So what? Rdps classes can stay very close to bosses and continue to attack. When aoe passed- return to range position. It is not a solution, because Mdps classes can not continue to attack while avoiding close-ranged boss's aoe attacks. There is another way to balance- different skills of Rdps-classes must get DISTANCE restrictions for using. For example, if you stay 10-yalms or closer- you cant use skill. You like it? So, by designing different mobs and bosses with close-range AOE attacks and with far-range AOE attack we will get very good balance (great example is Chimera):
-if close-range AOE attack, Mdps run away, they cant attack, but Rdps can
-if far-range AOE attack, Mdps continue to attack, Rdps cant attack, because they need to stay close to boss to avoid attack
Im not talking about all range skills, but many of them must get such DISTANCE restriction and this will make Mdps classes much more popular in different raids to Coil or anywhere alse

Or another solution- the efficiency of range-skills will reduce greatly and get a great damage loss, if target 10yalms or closer

Thank you