If the bot was released open source on github, and could run from Ubuntu, I'd be interested.
If the bot was even hard coded to give a 1% donation from all profitable trades to a hardcoded BTS user, I'd even leave that in there to support the developers myself. Of course anyone could take that out, but if I get 99% profit from using the bot, I'd use it.
Don't bother trying to donate from the profit. That's a whole huge can of worms. Profit is NOT easy to calculate from a MM bot - AND, Bitshares does a horrible job of reporting / P&L anyway (for now), as you can't export your trade histories more than a few blocks back.
Coming from a seasoned market maker, I encourage you not to code in any donations based on profit. The whole point of BitShares is that you wouldn't need to anyway - that's what the Bitshares funding mechanism is for (worker).
In any case, BitShares desperately needs more liquidity. It would be cool if this helped the average user participate in market making - love this movement! Nice work!
Bot shouldn't focus too much on profit at first. Just make a way for noobs to add buy and sell walls with X% difference from feed price. More advanced techniques can come later easily.