A017. 2015-07-28. Allow AE issuer use Asset to make dividends payment in another Asset.
A006. 2015-06-16. Allow AE issuer use MS to dividends payment.

Those two are already implemented in Ardor.

Ardor fees from child block transactions are split back in 1:1:1:1 ratio with the previous 3 block forgers.

Of course the AE is being developed, it is one of our most important components. One major improvement is that the limitation on number of decimal places is gone, but this required changing the way order prices are defined, they are now in NQT per share of the asset instead of NQT per QNT.

Next is allowing editable asset descriptions and increasing number of shares, this may be done after testnet launch though.