That is good to see I am not the only one having some troubles with them. Altough curently I am orienting my design on quite standard features to get some feedback of the platform before trying to inovate so it is not too problematic. But still I might try a few ideas if things were more clear.

I am still searching for someone who could provide answer to some of these question, please let me know if you know. Also if any online publication give more details than what is available on official site, I would like to get a look.