Talk:Rules baggage
Siege
Since we only have one subtype of battle so far, it's hard to know if Siege is an example of rules baggage in subtypes, or if actually most battles will follow very similar rules and most of the perceived baggage is just from a new card type that we're not used to yet. Just like when planeswalkers first came out. For instance, I would guess all battles will be able to attacked by creatures. But I could easily be wrong.
And on the other hand, even though we don't count "the mechanics of planeswalkers" or any other card type as rules baggage anymore, that's because they're evergreen now. If battles don't get to that status, it could be ranked like other mechanics are as to rules baggage. Sort of like dungeons, yet a bigger deal than dungeons because battles are regular playable cards that go in your deck.
On a minor note, it may turn out that battles/Sieges are unsuccessful, as many mechanics are, and Rosewater's eventual Storm Scale review may put it in a very different category than Adventure and Saga. EVERY mechanic that gets printed is judged to be "worth the rules baggage" at first :)
I'm happy to wait and see how it all shakes out, I'd just generally be careful about making many subjective judgements about brand new mechanics until after everyone sees it in action.