Swansong For A Raven,Bathory Aria,The Forest Whispers My Name,Nocturnal Supremacy,Funeral In Carpathia,A Gothic Romance,From The Cradle To Enslave,Funereal,Thank God For The Suffering,re-recording
"Bitter suites to Succubi" was a sensible re-recording of honorable, traditional tracks without denouncing the valuable originals as outdated. All songs that were recorded after "The Principle of Evil made Flesh", however, possess a more than average quality, both musically and the way they were recorded. Especially the two newest ones you mentioned, "Thank God for the Suffering" and "Swansong for a Raven", contain so many fine nuances ("Damnation and a Day" does, in general, thanks to the orchestra) that if you have problems regarding sound quality, it is probably your version of the songs, caused by a low bitrate CD-rip. If you are not talking about sound quality, then I do not see a reason why anybody should remake them, as all the songs listed sound perfectly fine the way they are to me.
Funeral, assuming that you are talking about the old song on "The Black Goddess rises", might be the only one worthy of a re-recording.