The problem with the battle in ROTJ is mostly the same problem of the entire movie, it seems to be done without enthusiasm.

ROTJ should be ESB-ROTS (in terms of pesimism and masiveness based on the historical importance of the facts that are being shown) till the very end when everything is solves well. Exactly the same for the battle, it should look like a giant battle where the rebels are being wiped out.

Instead of that we've got an optimistic movie (humor in Jabba's Palace, love without tragedy (unlike ROTS), sillyness with the ewoks a general lack of masiveness (Jabba's Palace is way too quotidian to be in the same movie that tells how the Empire fell... compare the order 66 scene, or the "I am your father scene" with basically all the bullshit that happens in Jabba's), and a non massive battle with always the optimism that the hero-ship (the falcon) provides in all its fancy shots. So yes, the star destroyers (which are supposed to be how many, fifty? maybe a hundreed?) barely get into the battle, so a little less dog fight and more capital ships might be good.

How you do it is something that doesn't really bother me. I'm not against CGI, computers are a wonderful tool for those who know how to use it. Look what Bob Garcia and Angel are doing with ROTS without building any model, and yet it sells OT aesthetics very very well. So if you are against all the fancy flybys and the flying camera that basically makes all the battle of Coruscant confusing that's a different thing that being completely against CGI models, which can give you certain advantages, like a balanced, good and believable illumination of the models matte lines, or even colour stuff (look at the Executor reveal in ESB, how the TIEs that fly all around look horrible due to illumination issues)