So recently I've been playing a great deal of Tales of the Abyss. I know it came out quite a few months ago but I've just recently found the time to play it. So far I'm pretty impressed (I'm on my second playthrough on the hardest difficulty), Namco has improved on many of the problems from Tales of Symphonia. My main problem with ToS are the characters. They are flat and static, barely growing as the story unfolds. Sure, we learn some interesting things about their pasts and origins, but does that act as a catalyst for character growth? Nope. They just continue in the same vein.
ToA definitely addresses this problem. Along the epic story (which is full of the usual Tales problems; mainly it goes on so long the beginning no longer even makes sense as far as character motives go) we have the development of the main character Luke. While I won't spoil anything, I really enjoyed his complete transformation as a person.
A lot of other problems from ToS are fixed as well. The battle camera now works with more than 1 player; in ToS anyone besides first player was almost constantly off camera making game play impossible. Overlimit now has a purpose which makes things interesting and the cel shading isn't as rough and jagged as it was on ToS. The free run feature in battle is also nice, making it quite easy to dodge many spells (not that the AI is smart enough to use it..).
Many of the new additions are great too. The AD Skills/Capacity Cores system is far more interesting and useful than the EX Skills system from ToS. As mentioned above, overlimits now have a use; mystic arts. This is your standard Limit Break/Overdrive/ougi/super move type deal, but it can be interesting working them into combos.
There is also some more replayability. Some arts/dungeons/titles/treasures can only be accessed on the 2nd play through of the game. To go with this, 2 new difficulties are unlocked for the second play through as well so you can challenge yourself. Right now I am playing on "unknown" difficulty and it's pretty tough. The first boss had around 40k hp and I only hit for 1 on every attack....
Of course, some problems remained. The overworld, although slightly better looking, is still awful. The ToS overworld looked like it was on the SNES. The ToA overworld is more like PSX. The camera in the overworld rotates very slowly and even stutters constantly. Vehicles also turn very slowly; pulling a 180 degree turn around is a lengthy endeavor full of camera stuttering. The autopilot feature is gained later in the game which makes the world map more bearable, but it has its own problems as well. When you autopilot somewhere the game gives you a loading screen just for moving positions on the world map - it doesn't even put you inside the place. So, you end up loading (just to change positions in the world map), then landing and entering the place, which takes more loading.
New problems also arose. Saving and loading take a good chunk of time. Saving especially; expect to spend at least 10 seconds whenever you want to save, I recommend a bathroom break. This is a major disappointment from ToS's near instant saving and loading, I guess its an issue with gamecube vs PS2.
Anyway, I am very pleased with ToA. I expected a rehash of ToS or worse (Tales of Legendia anyone?), but instead found ToA to be an improvement in almost every area, especially character development.