Can't tell the future but i don't think it's possible or maybe i say far-fetched dream even for Werra himself. At the time of making Kibuisa,Werra had the most solid band comprising excellent singers who worked well together and not forgetting the arrangement work of people like Al Nzimbi, Japonais, Kapaya and others.
for me 7 jours is more on the mould of malewa and hopefully of the sous sol and co on the few sebene rumba partsbut like stated above albums like kibuisa v12 or titanic to name a few are very very complicated to reproduce because first the secret of those albums is 99 per cent at least of those groups peaking at the same moment perfect conditions to release almost perfect motivation surrounding the artists... and its been one hell of a long time we have seen such context in any album