The Mob

"2. If my botter takes too long killing baal, he leaves and goes to the next game. How do I get it to stop doing that?
moving on the next game.. as in ending the current game and creating a new one?"

you can set the max time allowed to stay in the current game by editing this value in your character.ntl file found in D2NT172_NTBot36\D2NT\scripts\libs\config
me.maxgametime = 800; // time in seconds, maximum game length (0 is infinite)
"3. My pickit doesnt work too well in public games, I often don't get the drops I should. How do I make it work more effectively?"

meaning that it is ignoring some drops? or that some items simply arent dropping? you can change what to pick up by editing the files in D2NT172_NTBot36\D2NT\scripts\settings.
just follow the format