Because small arty grid was never rebalanced with rest of artillery. Also the grid change to arty was needed to make certain arty svipul fits still viable since svipul is losing grid to help curb those dual MSE or 10mn ac fits. Which were caused by the huge disparity between ac and arty fitting needs.

Also, you dont seem to realize long range small guns were mainly lasers, rails and missiles. Very few minny frigate/dessies could fit arty in any viable pvp fit (minus svipul). Theyve been behind the curve for awhile. Now, the jag, wolf, rifter, slasher, claw, dram, sabre and thrasher have wiggle room for new fits/meta.

Since when have minmatar ever been an in your face brawling faction? Acs are mid range weapons, blasters are close range. Rifters scram kite (albeit terribly) already with acs. As do arty thrashers (that arent instalock fit). Jag is meant to scram kite. Wolf is arguably an in your face brawler, just has a poor slot layout.

The great thing about EVE is that no ship is "supposed" to fit anything, its all up to what the person wants to fly. Minny ships arent known to be robust to throw themselves into the guns of your hecate. So range control is kind of their thing.

What is the reasoning behind adding the weapon disruption resistance to t3ds? Is it really necessary to fill every possible hole on what are already the most powerful (pound for pound) and certainly the most versatile ships in the game?!? At least make it resistance to ecm instead since that is already a bad mechanic.

While trying to emphasize the skill of the t3d pilot, you are de-emphasizing the skill of his opponent. You are giving him even more ability to counter anything his opponent does than he already has, while his opponent remains helplessly subject to the td3 pilot's ability to manage his abilities.