In fact, thinking about it some more, is there any reason we couldn't just send over any class designs within 1mt tonnage that was designed before, say 2290? Especially the refitable ones - we could send them an older design, and they can refit them into the modern one once they become major affiliates.
That includes: Constitution before B refit, unrefit Constellation, unrefit Miranda, Oberth
Since the idea of giving away a member design already has support, how about giving them a more combat focused member cruiser in addition? We can probably even give them a more recent one since the small number of such classes makes aquiring and analysing their designs less efficient for our rivals.
The Amarki would probably enjoy it if the Tauni choose their Hebrinda over the Constellation. Rigel and Indoria also have some nice cruisers.
That's not a bad idea. Although I'd still rather not send them the most modern designs that the member fleets use. Unfortunately for the Amarki, that means even the unrefit Hebrinda might be too advanced.
There's also the consideration that we may need permission to convey over such designs. Patroller may be an exception, because the Betazoids already approved transfer of the design to the Caldonians.
Listing the member fleet ships that are within 1mt and aren't too advanced:
Amarki Perciar 2279-Now [280m, 696k t]
C3 S2 H3 L2 P1 D3
Cost [70br, 70sr, 2 Years], Crew [O-2, E-3, T-2]
Amarki Calac 2290-Now [205m, 459k t]
C2 S2 H2 L2 P1 D2
Cost [50br, 50sr, 2 Years], Crew [O-1, E-2, T-2]
Amarki Brieca 2290-Now [225m, 681k t]
C2 S2 H3 L3 P1 D2
Cost [70br, 70sr, 2 Years], Crew [O-1, E-3, T-2]
Apiata Old Swarmer ?-Now [300k t]
C2 S1 H1 L2 P2 D3
Cost [32br, 32sr, 2 Years], Crew [O-?, E-?, T-?]
Betazoid Patrol Cruiser ?-Now [968k t]
C3 S2 H3 L3 P5 D3
Cost [100br, 65sr, 3 Years], Crew [O-3, E-3, T-2]
Betazoid Patroller 2289-Now [371k t]
C2 S1 H1 L2 P2 D2
Cost [40br, 40sr, 2 Years], Crew [O-1, E-2, T-1]
Caitian Swarmer Mark 1 2273-Now [397k t]
C2 S1 H1 L3 P2 D2
Cost [40br, 44sr, 2 Years], Crew [O-?, E-?, T-?]
Gaeni Tech-Skiff 2272-Now [186m, 424k t]
C2 S2 H1 L2 P2 D2
Cost [45br, 80sr, 2 Years], Crew [O-2, E-2, T-2]
Indorian Frigate ?-Now [?.?m t]
C4 S2 H2 L3 P2 D3
Cost [Unknown, 3 Years], Crew [O-?, E-?, T-?]
Indorian Patrol Escort ?-Now [?m, ?.?m t]
C2 S1 H2 L2 P1 D2
Cost [Unknown, 2 Years], Crew [O-?, E-?, T-?]
Indorian Combat Escort ?-Now [???m, ?.?m t]
C3 S1 H1 L2 P1 D2
Cost [Unknown, 2 Years], Crew [O-?, E-?, T-?]
Indorian Large Escort ?-Now [?.?m t]
C4 S2 H2 L3 P1 D2
Cost [Unknown, 2 Years], Crew [O-?, E-?, T-?]
Risa Heavy Corvette ?-Now [?m, 990k t]
C2 S2 H2 L4 P4 D4
Cost [100br, 75sr, 3 Years], Crew [O-?, E-?, T-?]
Risa Light Corvette ?-Now [?m, 370k t]
C1 S1 H1 L1 P3 D3
Cost [40br, 30sr, 2 Years], Crew [O-?, E-?, T-?]
Rigellian Cutter Mark 1 2260-Now [?m, 430k t]
C2 S3 H1 L2 P3 D1
Cost [45br, 50sr, 2 Years], Crew [O-?, E-?, T-?]
Rigellian Oda-Gach ?-Now [?m, 679k t]
C2 S4 H1 L2 P4 D2
Cost [70br, 50sr, 2 Years], Crew [O-1, E-3, T-4]
We should totally send them the Risa corvette designs or Gaeni tech-skiff
edit: struck out designs per anon_user's post below