I played for some time with latest Nexerelin, Industrial Evolution, DIY Planets, and some utility mods, but got broken save, which crashes on load:
Spoiler
136100 [Thread-3] ERROR com.fs.starfarer.combat.CombatMain - java.util.ConcurrentModificationException
java.util.ConcurrentModificationException
at java.util.ArrayList$Itr.checkForComodification(Unknown Source)
at java.util.ArrayList$Itr.next(Unknown Source)
at data.scripts.overrides.markets.AOSystemMarketManager.removeOverriddenShips(AOSystemMarketManager.java:507)
at data.scripts.overrides.markets.AOSystemMarketManager.scrubAllMarkets(AOSystemMarketManager.java:113)
at data.scripts.ArcheusModPlugin.onGameLoad(ArcheusModPlugin.java:113)
at com.fs.starfarer.campaign.save.CampaignGameManager.o00000(Unknown Source)
at com.fs.starfarer.title.TitleScreenState.dialogDismissed(Unknown Source)
at com.fs.starfarer.ui.Oo0O.dismiss(Unknown Source)
at com.fs.starfarer.ui.impl.o0oO.dismiss(Unknown Source)
at com.fs.starfarer.campaign.save.LoadGameDialog.actionPerformed(Unknown Source)
at com.fs.starfarer.ui.newnew.buttonPressed(Unknown Source)
at com.fs.starfarer.ui.I.?00000(Unknown Source)
at com.fs.starfarer.ui.I.processInput(Unknown Source)
at com.fs.starfarer.ui.newnew.processInputImpl(Unknown Source)
at com.fs.starfarer.ui.o00O.processInput(Unknown Source)
at com.fs.starfarer.ui.e$Oo.processInputImpl(Unknown Source)
at com.fs.starfarer.ui.o00O.processInput(Unknown Source)
at com.fs.starfarer.ui.v.dispatchEventsToChildren(Unknown Source)
at com.fs.starfarer.ui.v.processInputImpl(Unknown Source)
at com.fs.starfarer.ui.e.processInputImpl(Unknown Source)
at com.fs.starfarer.ui.o00O.processInput(Unknown Source)
at com.fs.starfarer.ui.v.dispatchEventsToChildren(Unknown Source)
at com.fs.starfarer.ui.v.processInputImpl(Unknown Source)
at com.fs.starfarer.ui.o00O.processInput(Unknown Source)
at com.fs.starfarer.ui.v.dispatchEventsToChildren(Unknown Source)
at com.fs.starfarer.ui.v.processInputImpl(Unknown Source)
at com.fs.starfarer.ui.o00O.processInput(Unknown Source)
at com.fs.starfarer.E.I.processInputImpl(Unknown Source)
at com.fs.starfarer.ui.o00O.processInput(Unknown Source)
at com.fs.starfarer.ui.v.dispatchEventsToChildren(Unknown Source)
at com.fs.starfarer.ui.v.processInputImpl(Unknown Source)
at com.fs.starfarer.ui.Oo0O.processInputImpl(Unknown Source)
at com.fs.starfarer.ui.o00O.processInput(Unknown Source)
at com.fs.starfarer.ui.v.dispatchEventsToChildren(Unknown Source)
at com.fs.starfarer.ui.v.processInputImpl(Unknown Source)
at com.fs.starfarer.ui.o00O.processInput(Unknown Source)
at com.fs.starfarer.title.TitleScreenState.processInput(Unknown Source)
at com.fs.starfarer.BaseGameState.traverse(Unknown Source)
at com.fs.state.AppDriver.begin(Unknown Source)
at com.fs.starfarer.combat.CombatMain.main(Unknown Source)
at com.fs.starfarer.StarfarerLauncher.o00000(Unknown Source)
at com.fs.starfarer.StarfarerLauncher$1.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
I think this will be useful. In 0.9.1. version as I remember Archean Order was compatible with such mods which doesn't add new ships and weapons.
About mod ideas, interesting in what way you plan expand the mod? About my suggestion, I think good idea make more ships for Science Faction and Trader Guild, so they can become full fledged faction like Archean or Adamantine factions, with own ship line and unique weapons. For Trader Guild I think is good idea is unique logistic ships and combat ships with good cargo or fuel capacity, as for style, I think something like this is good style for them:
https://fractalsoftworks.com/forum/index.php?topic=21717.0Also I liked bounty changes in Vayra Sector, sadly it still isn't updated, and I'm not sure what it is compatible with AO, where bounties not always on pirates, but also for other factions too, and of course unique bounties also good idea, I'd like to see something like that. Also in vanilla game there is not much difference between hostile and vengeful relation, I think is good idea when player become vengeful with one of faction, it starts put bounty on player head occasionally.
If I don't mistake you also plan a new story line, interesting what do you planning? About quests in general, I found long quests with tons of text being not very enjoyable, like vanilla Galatia quest, when I plated for second time I skipped all that walls of text, I personally prefer some unique but short quests, like Sierra quest from Arsenal Expansion. Also about quests in somewhat similar games, Space Rangers while being 2d turn based space game have text quests, they was also basically wall of text with chooses, but done in more interesting way, being more complex had alot of illustrations and often very different outcomes, like you can just fail or die in that quest.