>>96821397
Shattered Legions in 2.0 were the single worst written army, with every legion having majority/minority/flaws that change dynamically instead of a proper legion trait, and you can't take any legion-unique units or gear. No allies either; I'm honestly not sure what the fuck they were smoking when Blackshields were just kind of okay in the same book. The amount of tracking you have for each squad slows down the game dramatically.
3.0 at least appears to be a lot more streamlined about it with three consistent, conditional minor rules.
>>96822253
Both 2.0 and 3.0 deal with Indomitus Terminators as a Legacies unit than an armor type, so no characters or anything. Similar deal with Custodes, who can't have Aquilon Terminator HQs.