So basically from what I can tell, The way "Detection" is being made to work in DN right now is more so based on Naval / Submarine Warfare as seen within the classical 'Star Trek' shows.
(more so rather than what one would classically consider per the accustomization we have to radar,)
-to say-
The More "Noise" you Make, The Sooner / Further Away You Can or Will Be Seen or "Heard."
Yes, 'Sounds' in the classical sense don't matter much in space as we understand them forgoing simulations.
( "Sounds" in this sense of metaphore is to mean //things that can be tracked by kinds of detection.// )
The bigger a ship is and the more "noise" it makes; and Yes. the bigger or such a ship is the more ''noise'' it will make, The further away it can and will be detected by a listener looking hard for things.
This is in large part the nature of Submarine Warfare: "See or Hear them First, and Kill them as Quitely as you can with a way out planed early, Long BEFORE you ever open the tubes."
This is in large part it seems to how Dreadnought is set up to work like or as.
Safe to say.... Many people to increasingly include myself LIKE this idea. . . if done right.

-(Issues to Consider)-
Thresholds to consider: Minimum Ranges of Detection per Ship Classes and Individual Ships, along with how they are being used. Energy Use and "Speed", Modules and When you Open Fire.
Dreds are large with some THiCC bigg_hass_booddies and being BiG means being easier to detect.
Corvettes are small but not unable to be seen if targeted, and not sure how 100% ninja a Striborg is vs a Machina, lolz... and again if PtW or PtE is going to make some noise along with PtS the least so maybe.
DDs would not be "AS" big as DNs but still more noisy than a Corvette to some reasonable degree.
Arty and Tacs again as smaller craft would not make as much "noise" as DDs being between them and VTs.
By setting 'minimum distances' per how much "NOISE" a ship makes per their Size and Class along with how a Player is using them, we can in turn create a FAIR and Balanced system.
Fun Times, eh? Note: By no means do I claim it would be an All-At-Once thing, to be sure or fair.
HOWEVER, something needs done where a giant azz fraks Dreadnought is not undetected 0.00km away, In Full Plain Sight In the Open w/o Any Kind of [ACTIVE] Concealments.
Corvettes? Well, again... that small a ship not using Guns, Modules OR Power to Engines or Weapons or Shields? meh.......... I can be ok with that. (such that if you are pinged, something shows up on the display map)
/)'glhf 
Addendum: "Active Sonar/Radar" as a 4th Energy Wheel power ability?
Perhaps we can have an "Active Sonar" thing that puts out 'pings' that while they give away the user if too close to foes and only can "ping" something in the open that is close enough such if not so one can give away themselves /without/ finding their prey...... it WOULD help with when 'hunting' smaller ships close in or marking big ships further out.
It would even add another layer of strategy for all ships, such a DN needs E. for Shields usually with "Active Sonar" not being expensive would still cost some juice.
By the same, a Corvette on the hunt for another Corvette for their team would be seen by their prey but wouldn't be a bad thing for their teams to do, so forth....
*If one wants to see, or if one seeks to not be sought, a choice for them to make...........
[Thoughts or Ideas? Complaints on how I write? Post em all below, just please try and be civil.] 