I personally understand the reasoning for not liking a change like this since it does indeed make it more difficult on the player - BUT, there are many benefits as well. Blacksmithing does NOT increase the intensity of properties on an item, that is determined by the runic hammer. Therefore, stacking blacksmithy is now --
-Crafting is much more valuable, especially endgame.
-Crafting takes effort to do rather than just getting a 120 and crafting anything (Something to work towards as a crafter)
-Provides skill clothing like Blacksmithy to now have more of a purpose rather than just raising your exceptional chance to 100%.
----The current nerf may have been a bit too drastic but there are benefits from the idea and its moving in a positive direction for the server.
Additionally, I know you mentioned Mages are the only way to PvP. Loial has proven that statement not entirely correct, and consistently performs as one of the top PvPers primarily using heals and a weapon. It is a rare day if he casts any harmful spell. Magery casting time has been reduced substantially with this new revert, making mages less strong. With that said, I do believe dexxers could receive maybe some minor buffs such as: (EDIT - Triple slash is actually stronger than before) and reducing spike shield damage, and maybe providing a route to increasing PURE Dexxer hit chance (above cap) or something of the sort. However, currently some of the best PvPers on the server such as Loial and Cal El are primarily Dexxers.
Not to say you havent tested the current new system Cryptic, but I have been PvPing frequently every day since the shard revert and I have not seen you out once. Come and test it out a bit with the Top Dexxers and Mages before making assumptions on the new system, might be more different than you remember.
All In all, changes seem to be moving in a positive direction for the servers long term growth.