And do each of those change a core mechanic with such a low drawback?Rogue changes the core mechanics (you can move & shoot.)
Yavaris changes the core mechanics (squadrons may shoot twice in one turn.)
Dodonna changes the core mechanics (look at 4 crit cards and pick one to resolve, when an enemy takes a face up damage from any source, including overlapping)
Monmothma changes the core mechanics (use evade tokens at med to cancel die, close to reroll)
Rieekan changes the core mechanics (dont remove ships when they die)
Luke Skywalker changes core mechanics (can't use shields to stop his damage)
Raymus Antillies changes core mechanics ( gain a command token, and can spend dial)
I can list more if you need me to?
To argue that only Demolisher and Rhymer change core mechanics is disingenuous at best, and outright lying at worst. Core Mechanics are the stuff that the game came with, everything in that is the base, and anything that changes how ANY of that works, is changing the core mechanics of the game.
Is Yavaris as fast or survivable as a GSD? Dodonna happens sometimes and is not used every turn like Demolisher can and is more times than not. Mothma Modifies a rule not changes it. Raymus Modifies the rule not changes, Luke requires that you actually hit, Rogue's can be engaged.
The ONLY way to stop Demolisher is to kill it. That is it. It has no inherent drawbacks. 10 points is not a drawback, just a small tax.
What's Mon Mothmas drawback?
Don't get dragged into his misdirection. His original claim was that only Rhymer and Demolisher are core changes. Now he's moving the goalposts to 'core changes with a low drawback'.
He could be right about them being the only special rules that significantly alter core gameplay mechanics, I just don't really see why that's a problem. If it's unbalanced, sure.

