its alot harder than you think,but.. spoon feeding step by step guide!
First you need to change every single titan Ability (24 of them) from
maxNumLevels 4
levelSourceType "TitanUpgradeLevel"
sourcePropertyType "AbilityALevel"
to
maxNumLevels 4
levelSourceType "Intrinsic"
minExperienceLevelRequired
Level:0 0.000000
Level:1 2.000000
Level:2 4.000000
Level:3 6.000000
then personally I could Clone each Factions Battleship(simpler than comparing unless you have netbeans or something fun)keep the same names for the titans
add abilitys, thankfully rebellion ability's are ACTUALLY CALLED WHAT THEY ARE, YES LOOKING AT YOU IRONCLAD!
ability:0 ""
ability:1 ""
ability:2 ""
ability:3 ""
Replace
NameStringID ""
DescriptionStringID ""
picture ""
specificDebrisMeshName
hudIcon ""
smallHudIcon ""
infoCardIcon ""
ShieldMeshName ""
meshName ""
then copy the weapons over.
You then need to change PlayerPsiRebel PlayerPsiloyalist PlayertechRebel PlayerPhaseRebel etc etc
and move the titan name to Capitalship updating the count and lowering the count as you go.
that should be all you can also add the research requirements back in, simply change
Prerequisites
NumResearchPrerequisites 0
RequiredFactionNameID ""
RequiredCompletedResearchSubjects 0