Let me get this straight, somehow there's something wrong with this system NOW? You realize this is essentially the exact same system we had pre 7.2, except the rewards are actually technically higher and they are more spread out. There were no "extra" rewards past +15 pre 7.2, so by your logic the system was flawed back the as well but this entire post is implying that it just now recently became broken after the recent "changes".

Blizzard needs less content that gives higher loot than mythic raiding, not more of it.... 905 is more than generous for a +10. If they implemented this system they would have to continue to raise the item level by +5 for each subsequent level (10 & 11 would share rewards), essentially exactly like it was pre 7.2 with 10-15 weekly rewards. So you couldn't even go beyond 15 in the first place because you would end up hitting the 925 cap.... For a +15, that's just insane for where we are in the game right now.

Eventually they will make that change, just like they did pre 7.2 when they first increased rewards up through +15, but right now is too soon. It would be absurd to have every heroic guild in their brother going into ToS with 925s in pretty much every slot. Surely other people understand how crazy that would be? You complain about not having upgrade chances in NH after the 3 months that it's been out, but what the fuck do you think would happen on day one in ToS if this were the case? It would legitimately be worse then the current situation you are describing now. Your logic doesn't make sense, "I have no more upgrades after running NH for 3 months (no shit, you think?) so let's start giving out 925s, that way I will also have zero upgrades the day ToS drops"....