I posted a short plan in the forums of what I will be working on in the near future.
The most asked for change so far has been to be able to choose where Tiggit and the games are installed. So this is the first thing we will fix. Another popular request is sorting the game list based on date added or number of downloads, and we will also fix that.
I will keep that thread updated with progress as we go along. Or you can just sit back, relax, and let all the sweet changes come to you via the auto-update 
I just found out about this, and its freaking awesome, keep up the good work! greetings from Serbia!
Hope for a Linux flavor of it ^^