The new flashy combat is not the problem. It's the boring storyline
The main problem with DA2 is the storyline. There just nothing compelling you to play it other than well your the champion and this what the champion did for 10 years. Really, who cares? DAO and ME2 had gripping story lines that made you want to see how the story unfolded. You wanted to play on to see what happens next. In those games you were building a team and an army to for the final battle. DA2 on the other hand is basically having you do fetch missions over and over again which are completely unrelated to each other. They're boring and they feel like chores that are there just to advance the storyline.
This is the biggest flaw with the game. It's also the main reason why I play RPGs. I want a good story where I can immerse myself in. Combine this with the other problems like no top view for the PC and you have one big let down. Especially after DAO was such a great game. I use to buy every Bioware game that came out without even looking at reviews because I trusted they would always make quality RPGs. No longer will I be doing that after this rush job they did with DA2.