Don't know about the multiple movies a year approach but I will say this, and I know it's going to cause many on here to get upset with me, but I think Disney should just completely pass over the period right after ROTJ and start Episode VII right in the Star Wars: Legacy era. The pros to this are... 1. You get to keep the expanded universe established by the novels intact. 2. With the next film taking place in during the Legacy timeline Disney will have the freedom to cast all new actors for the key roles instead of feeling fan pressure to bring back the stars of the previous films to reprise their old roles, 3. Since Legacy is a comic series and not a book series (and also not as well known as some of the novels) the writers can pick and choose what elements they want to use and which ones to omit, heck we see it all the time with comic to movie adaptations why should Legacy be any different? (and mind you I'm saying this as a fan of that series)
Now I'll admit there are cons to this as well some of the biggest ones being... 1. We won't get to see Mark Hamil, Carrie Fisher, and Harrison Ford reprise their old roles, however let's remember guys and girls that Harrison Ford is 70 years old, Mark Hamil is 61, and Carrie Fisher is 56, so unless your ready to accept new actors in those roles (which I'm not sure I am) any movie based directly after ROTJ is unlikely, 2. Long established EU stories that people felt to be the true sequel to the original Star Wars trilogy (i.e. The Thrawn Trilogy) won't be realized on the big screen, 3. Movies based on completely new characters in a totally new timeframe may alienate long time fans, (though I remember this same thing being said about Episode I so...)
So while I personally would like to see the new movies based on the Star Wars: Legacy comics I understand those who may not share my views, however be forewarned that if you insist the next films be based directly after Episode VI be prepared to accept new actors in the main roles and/or the continuity of the EU books to be almost completely trashed.