What a strange question. Or, perhaps, a strange way to formulate a question... I doubt DA2 even crossed Obsidian's mind when they were making their plans for PE, but what I think you're really asking is whether we think they purposefully picked a type of RPG that isn't really being made anymore to "pull in" gamers who aren't satsfied with today's modern CRPG offerings (like DA2)?
And yes, I think it's very likely that they realized this while planning PE, but I also think they -- and many other developers, including those working for BioWare -- genuinly love the Infinity Engine style of 2D, tactical, group-based CRPG's and really really wanted to make a game like that. And so, recognizing the demand for that type of game (a demand that had existed since long before DA2 was released btw) and seeing an opportunity in Kickstarter to satisfy that demand with a great degree of freedom, without the interference of a publisher, and create a brand new Intellectual Property that they would own all the rights to, they simply went for it. And then it became the most succesful video game kickstarter to date
There is opportunity.. it has to do with situation in a country and the world.. I love style of 2D... and how amazing the world feels with it. Bioware graphics of games like DAO DA2 or MASS EFFECT are okay. I am an artist and I like some of the art aproach of how the elements where executed.. but never been very appealing to my eyes compare to other games. DAO was fun for me ... just for one reason.. it bring old memories and ME1 is a different game and a Best 3d bioware game! thats for my taste.