In Star Fleet Universe terms, the modern era of starship design started in the Alpha Octant in the Y120s, when the first Constitution-class cruisers and Klingon D6s entered service. However, these ships as they first served did not have the same stats you see in A Call to Arms: Star Fleet; the "default" version currently available incorporate a series of refits which were incorporated into these hulls by the time of the General War.
The "pre-refit" era is referred to as the Middle Years, running from the Y120s through to the end of the Four Powers War in Y162 (or thereabouts). This was the time of the "trivideo events" from the on-screen source material; the famous "five-year mission" took place from Y154-159, while the incident at Talos IV happened in Y142.
Each star navy had its own set of challenges in this era. Most ships had weaker aft shields, which put a premium on careful maneuver. Drones were slower (and far less common) in this time period; only the Kzintis used them in any great numbers, while the Federation had yet to adopt them to any great extent. No plasma ships had S-torps yet, and no carronades either. Early dreadnoughts had fewer heavy weapons; the Klingon C6 (the immediate forerunner to the C8) had only four disruptors. Also, none of the "war" class ships existed yet, so fleets had to make do without the likes of the Fed NCL, Klingon D5, or Romulan SparrowHawk.
And did I mention the part of there being less drones?

In Star Fleet Battles, the Middle Years hulls are part of the game's very beginnings; as shown by the inclusion of many "pre-war" hulls in Basic Set itself. In Federation Commander, things are a little different; most of the Middle Years Ship Cards are offered in FC: Briefing #2, while the "Franz Joseph" designs inherited dorectly from the Star Fleet Technical Manual are in Booster #91 (and offered in miniature form in Starline 2400's Squadron Box #91.)
Presumably, there may one day be the chance for a Starline 2500 take on SB91; but even while the likes of the Saladin-class destroyer and the original FJ take on the Federation-class dreadnought still lie in reserve, could a Fleet Update covering the ships in Briefing #2 still be an option?
Victory at Sea currently has two distinct settings; with one set of rules looking at the Second World War, and another going back to WWI.
Doing something similar for ACtA:SF would (for the most part) not need much in the way of new minis, but could be a way of offering players a different set of tactical challenges with the pre-existing Starline 2500 range (and the "pre-war" ships from wave 2 which would be eligible for use in this time period).
Does that sound like it might be worth considering?
The "pre-refit" era is referred to as the Middle Years, running from the Y120s through to the end of the Four Powers War in Y162 (or thereabouts). This was the time of the "trivideo events" from the on-screen source material; the famous "five-year mission" took place from Y154-159, while the incident at Talos IV happened in Y142.
Each star navy had its own set of challenges in this era. Most ships had weaker aft shields, which put a premium on careful maneuver. Drones were slower (and far less common) in this time period; only the Kzintis used them in any great numbers, while the Federation had yet to adopt them to any great extent. No plasma ships had S-torps yet, and no carronades either. Early dreadnoughts had fewer heavy weapons; the Klingon C6 (the immediate forerunner to the C8) had only four disruptors. Also, none of the "war" class ships existed yet, so fleets had to make do without the likes of the Fed NCL, Klingon D5, or Romulan SparrowHawk.
And did I mention the part of there being less drones?

In Star Fleet Battles, the Middle Years hulls are part of the game's very beginnings; as shown by the inclusion of many "pre-war" hulls in Basic Set itself. In Federation Commander, things are a little different; most of the Middle Years Ship Cards are offered in FC: Briefing #2, while the "Franz Joseph" designs inherited dorectly from the Star Fleet Technical Manual are in Booster #91 (and offered in miniature form in Starline 2400's Squadron Box #91.)
Presumably, there may one day be the chance for a Starline 2500 take on SB91; but even while the likes of the Saladin-class destroyer and the original FJ take on the Federation-class dreadnought still lie in reserve, could a Fleet Update covering the ships in Briefing #2 still be an option?
Victory at Sea currently has two distinct settings; with one set of rules looking at the Second World War, and another going back to WWI.
Doing something similar for ACtA:SF would (for the most part) not need much in the way of new minis, but could be a way of offering players a different set of tactical challenges with the pre-existing Starline 2500 range (and the "pre-war" ships from wave 2 which would be eligible for use in this time period).
Does that sound like it might be worth considering?