Any response from the core developer, what library are common to integrate into bitshares, for export and graphical illustration of the acc. history would be nice.

I don't see the benefit for an extra forum. The share drop is a nice thing. 

The history export function is limited, needs better templates and charts with a client side implementation.
It is a good time to discuss the features, requirements and which template library should be used for export and visualizing the account history.

How about reading the posts above and ask specific questions?

Openledger

I just wanted to buy on the DEX some coins, but now the fees are at 0.2% again.
Low fees are critical for growing the ecosystem and on the long run, both will benefit.

When will we go back to 0.1%?

Fox provides wrong price feeds?

What solutions do exist to integrate BTS on a local store with a tablet?

Are there any partnerships with terminal producer like https://blog.pundix.com/category/partnership/ ?

When spending crypto I don't like smartphones, a card to sign the transaction on an terminal with my private key is a nice thing.

The referral program in BTS is a very good reason for a partnership and should provide a good integration.