Unfortunately, this may be good or bad news to you.
Recently I got Black 2 and ironically, instead of it motivating me to improve the game and get to the nitty gritty details, it made me realize how outclassed the GBA games are when compared to the DS ones. I have lost all motivation to complete the game, however I don't want to leave you all empty handed. Below is the link to the game and the progress I've gotten on it so far. You can play it, although a lot of it remains to be done and I didn't even get to completing the first gym yet.
If you really want to continue the hack, by all means you have my blessing. In fact, I'd like to not see this hack die, but if no-one wants to do it then I guess it can't be helped. But you must first VM me for permission so things like two of this same hack don't crop up (which I doubt, since it wasn't very popular to start with).
http://www.mediafire.com/?89dl4ilqp75ih2o
Once more, I'm sorry, but give it a test run if you want.
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Current Status: In need of a Scripter that'd do the boring scripts I don't wanna do