No changes for the most used ship in the game? So much used that it becomes a 3 to 1 ratio to the second place ship, which is a tech III cruiser of the same general ship type

And then you would nerf the Hurricane instead? I can agree that Harbinger needs to be able to fit Beams,1600, and mwd. It might then be a true BC counter to Drakes. But your proposals do not narrow the gap between Cruisers (even with a future cruiser buff which hopefully will not be as dramatic as the current frigate buff) and BCs, which is one of the devs stated concerns - the new player "rush to tier 2 BC."
What really should happen is all tier 2 BCs should get the hp stats of their tier 1 counterparts. The tier 1s given a low or mid slot as appropriate. And the 7 high slot BCs either given an 8th high or a drone bay increase to compensate otherwise everyone might just choose cane/cyclone. Other ship specific adjustments could be Myrm getting 100 bandwidth with reduction in gun slots, etc. Also BC shield regen needs a reduction to get rid of ridiculous pve regen setups while preserving enough for reasonable pve regen stats. The resist bonus on the Drake has to go (as well the Myrm) and replaced with something of an offensive nature but not too much. Basically each race should have a tanky BC and a ganky BC from this, but not both in one ship. The tanky should not be putting out 350-400 dps at 70km. This leaves the blobbage cheap as ships BC fleet still viable.
Then heavy missiles need a slight range nerf. Either directly, or the Missile bombardment skill needs a nerf to 5% per level, or TDs need a missile flight time reduction component, or some combination of all those. The falloff bonus on TEs needs to be slightly reduced. Medium neuts need a slight nerf so as to not be abused on Canes or Myrms but only if neut boats get a compensatory buff.
The point is, only addressing the ship stats in isolation just pushes the problems onto other ships. And just buffing all BCs up to Drake level (which btw your post still doesn't do) continues to leave HACs in the doldrums unless you want to propose some buffs for HACs that situtate them better than tier 2 BCs but don't make them easy BS killers. The danger with your approach is we will have an endless round of buffs that won't fix any of the current problems.