Sora no Otoshimono Forte is very much like I remember the first season. If you liked it before, you won't be too disappointed.
Luckily the story isn't exactly the same. Instead of waiting for another angeloid to attack some characters go on the offensive and start exploring the synapse. This reveals a bit more of the background of angeloids. Not everything is done as well as it could have in my opinion but story isn't the most important anyway.
The new characters are a great addition. Another, be it stereotypical, character which leads to different and funny situations.
The animations looks good but I still can't get used to the main character being chibi most of the time.
Sora no Otoshimone Forte is a rather average but fun to watch anime. I will definitly be watching the next season as well.