Which means that the Star League is somehow even less fitting, and surely won't result in "better synergy".
I recently had to go through and figure out what units were available for use in 2729 and 2730 for a game. It's not a lot; less than half of what's in TRO Succession Wars. Any time after that, you have to ignore Royals and any non-Introductory tech variants because those largely weren't included. Just avoid the hassle and stick to the 3020s.
good thing they just released a big ole binder of 300 variants
If you ran a series of missions during Operation Chieftain (2772), this is what is available to the various militaries per the MUL that is in RS: Succession Wars. That's variants for 71 of 93 chassis presented in the TRO for those of you keeping score at home. I'd call that synergy adequate. It also gives a range of tech in low doses to acclimate new players to life outside the box set, which you do not get in the 3020s.
Assassin 21
Atlas D
Awesome 8Q/8R
Banshee 3E/3M
BattleAxe 7K/7NC
BattleMaster 1G
Black Knight 6
Blackjack 1X/1
Bombardier 12D
Catapult C1/A1/C4/K2
Chameleon 4B
Charger 1A1
Cicada 2A
Clint 2R/3T
Commando 1D/2D
Crab 27
Crockett 5003-1
Cyclops 10-Z
Dervish 6M
Dragon 1C/1N
Emperor 5A/6A
Excalibur B1/B2
Falcon 4N
Firebee 2E
Firefly 3A
Firestarter A/K/H
Flashman 8K
Flea 4/14/15
Galahad 1D/2D
Griffin 2N
Guillotine 3N
Hammerhands 3D/4D
Highlander 732
Hoplite 4A/4C/4B
Hunchaback 4G
Hussar 200-D
Icarus II 1S
Javelin 10N
King Crab 010
Kintaro 19
Kyudo 02
Lancelot 01/05
Locust 1V/1S/1M
Lynx 9Q
Mackie 7A/8B/9H
Mercury 99
Mongoose 66
Night Hawk 2Q
Nightstar 9J
Orion K
Ostscout 8J
Panther 8Z/9R
Phoenix 3R/4R
Pillager 1N/3Z
Rampage 2G/4G/5G
Sentinel 1S/3L
Shadow Hawk 2H
Shootist 8A
Spider 5V
Stalker 3F/3H
Talon 5V/5W
Talos 1B
Thorn F/N
Thug 11E
Thunder Hawk 7X
Thunderbolt 5S
UrbanMech R60
Victor 9A/9A1/9B
Whitworth 1S/1/0
Wolverine 6R/6K
Ymir 2B/2E/3A
Follow up with a campaign book to accompany TRO: Clan invasion set around Bulldog (depending on how the average intro date is affected from '60 and '67).
As an educator, I don't agree with the firehose format. You don't teach anything like that effectively, especially when you presume a not insignificant portion of players have to teach themselves because there aren't any play groups in the neighborhood. If campaign books "don't sell," maybe the more alarming implications are 1) there aren't a sufficient number of players being attracted to the game to support new player products (distressing) and/or 2) they are marketed poorly to / inadequately designed for new players (self-inflicted). Or are scenario-type books just not popular with anyone in any system and not even worth making?