Pokemon Conquest is somewhat fun, considering its a new direction its definitely not bad. My main issue however is that you're limited to 1 move per pokemon so sometimes you can screw yourself over by evolving.
Also what exactly is going to be new in Black and White 2 compared to Black and White and is it enough to be worthwhile? Haven't found a solid list just yet but a few of the things I have been hearing about sound interesting.
Let's see...
Continuation of the plot from Black and White
There's the memory link, which is basically an old save bonus that will unlock some extra scenes and sidequests and have the old PC be referred to with the name you gave them.
There's pokewood, which is an alternative to the musicals where you choose dialogue trees and some sort of battling
Black City and White Forest are now battle tower like facilities instead of the annoying animal crossing esques thing they once were
You can obtain dream world abilities ingame from special pokemon found in hidden hallows
Trainer sprite animations
Unova pokedex has 300 mons available from the start, presumeably due to the invasive species that escaped the from the transfer facility in Black and White
All the gyms have their own remixed version of the Gym Theme music, some of which actually have vocals
There's a IV checker guy
You can call a specific person who will tell you how happy your mons are, how to improve them, and also checks Effort Values
There's a very hard to obtain item that increases your chance of finding shinys
There's a not quite as hard to obtain item that increases the likelyhood of your pokemon in the daycare having eggs
There's changeable difficulty levels, though you need a copy of the other version that has already beat the champion to access both of them. Basically you have these key items that can change the difficulty but you only get them if you beat the champion. However you can send a copy of them over to someone else's game no matter what point in the story they are in. Black2 has the challenge mode key, and White has the Assist mode Key
All the Gen IV and Gen V legendaries that aren't mascot or event pokemon are available
There's a mall that opens a new shop everytime you meet a new person in multiplayer. Supposedly it has some very good stuff in it
It has an achievement system. There's a guy in every Pokemon Center who gives you these medals if you speak to him after doing certain things. There's around 250 medals in total. It has the simple do everything medals, but also have medals for beating the elite 4 and champion with only one pokemon or with a team composed entirely of peopkemon of a certain type.
Free Zorua
You can buy evolution stones at the battle subway.
Also there's this