Ok Minekaze (which I play btw and with the 10Km torps) needed some nerfing but I think you overdone it. Now its even worst than Isokaze. You need at least to increase the range of their cannons to the same as Isokaze else its worst than its predecessor Isokaze and some stats to prove it:
Isokaze
Main Battery: 120 mm/40 41st year type 4x1 120mm Range 9.1 Km
Damage and dispersion are pretty much the same
Minekaze
Main Battery: 120 mm/45 3rd year type 4x1 120mm Range 7.6 Km
Torps after the nerf are now the same and Isokaze has a bit lower detection range 6.1km instead of 6.2km of Minekaze
How do you justify the shorter range???
And how do you see that as an improvement Minekaze (tierV) of the Isokaze (tier IV)???
Btw why you left the Cleveland untouched? Everyone admits that its an OP ship