The sequel on the other-hand wasn't very replyable due to lacking customization, no true consequences to choices and limited class customization with weapons specific to each class. Origins allowed you to create a dual wielding warrior, sword and shield warrior or two handed weapon warrior and you could even give them a bow and level them up in archery skills. DA2 on the other-hand only allowed you to create a sword/shield and two handed weapon warrior and the specifications didn't really add diversity, they were just extra skills.
I agree with you, but, I must say that Dragon Effect 2, despite being inferior to its predecessor in every aspect, it has more replay value than you might think: the customization is watered down, that's true, but there are some pretty heavy decisions to make: things that change entire sections and some tones/epilogues. The most noticeable one is Hawke's brother/sister fate -many things differ if you manage to bring him/her back from the Deep Roads alive and... "well". The outcomes in this matter surprised me because I thought it was pretty irrelevant. Apart from this, of course, it is the matter about allying with templars or mages (not that this is particularly well developed, but, hey, it is there, and changes the way the ending developes).
So, yes, I agree with you in everything except in that thing about big decisions; certainly, there are less climatic choices to be made, but there are some, and surprisnsingly, with some deep impact in plot developement.