Consequences for me in PvE (solo L4s in Myrm) because of the NPC drone aggro changes:

Never use Scout Drones for what they are actually for: Frigs (Instead kill all the frigs with guns first and lose dps)
Never use Medium Drones for what they are actually for: Cruisers and BCs (instead use scout drones and lose dps)
Only use Heavy Drones when there are around 3 BS left and be careful. (use mediums instead, lose dps)

Sudden Drone aggro switches from ranges 50km-20km result in a lost drone and there is nothing you can do about that.

The People you wanted to hurt (afk mission runners/bots) use Centries and those are completely unaffected by the changes because they effin pop stuff from 100km away...

I will be in a Centry/Gun boat the next days, i just thought ill be nice to the other newer players that have to rely on everything but Centries and tell you what i experience.

It adds 0 to the gameplay, its basically just a giant nerf for pre centry pve droneboats.
Wich wasnt nessesary since non droneboats in the same brackets dish out equal dps without drone transit times.

For null sec pvp gozus: Please i know you dont L4, you dont need it, dont comment on it.
For "make the game harder" people: there is no workaround that isnt cutting dps. its not a difficulty issue.

Wrong ship/fit for the job at hand, simple as that. Drone aggro changes was needed, even if I don't like them... It makes drone boats have to pay attention without making them unviable, like other weapon systems.

I use lights and sentries constantly,perfectly viable. Stop sucking :/