Hi GS,
I am from FI and there we have ACDOCA table that it is a join with many tables too. So the benefits that you have table unique, it is because you have all the fields in only one table and you do not have to do a query in more than one table because all the fields is allocated in the same table added with high speed HANA.
But this is possible with the HANA technology, in other words without HANA you cannot do a simple query in the BSEG or MSEG table because it takes a long time even if you create some tables indexes.
HANA comes to stay and we have to accept these changes about the high speed and and tables join.
JPA