To be fair there really isn't a good time to talk about redesigns or fourth specs. When they usually become a topic of conversation, it is in the lead up to an expansion announcement when NOTHING has been announced and therefore anything can be suggested. However, by the time the buzz for a new expansion announcement begins reaching fever pitch on the forums...the parameters for the expansion and the classes themselves have pretty much already been set.
Now I've gone on record in the past stating my view that part of the issue Mages face are innate to the class. The fact we have three specs when three were never needed. The fact that all our specs are ranged nuking specs. These are decisions made YEARS ago, in complete sincerity that they would not make now if presented with the same options again. But you cannot unring some bells so to speak.
Right now though, I agree. Now is not the time to be talking about major redesigns or fundamental paradigm shifts for any of our specs because there is clearly no time left for anything like that to be attempted.
In our defense though, our conversation HAS narrowed down to areas in which Blizzard CAN make a change and yet on which we are not receiving much feedback.
Is the Mage in Legion improved over the Mage in WoD? Yes. Could it be better? Again, yes...and substantially so.
As for the complaint that don't seem to be receiving any attention...I can understand that within the current design parameters Mages are mostly fine. And some of the things we are complaining about are issues Blizzard themselves may feel they are ok with.
But the level 75 tier is indefensible. It has no overarching theme and seems to be a dumping ground for talents Blizzard doesn't want to get rid of but cannot think of anywhere to actually put them. It looks and feels unfinished. The fact it hasn't been updated in months is staggering.