OK, here we go...
The executable for Shandalar 2012 (ie.
Shandalar.exe) uses the file
Cards1.dat for all CardInfo. Titles, Names, Rules Text, Flavor Text, Colors, ManaCost, etc. This file is identical to the
Cards.dat found in Manalink 1.3.2, and therefore has all the old-skool CardInfo, including all text.
The DeckBuilder is the same one from Manalink 3.0 and uses the file
Cards.dat for all CardInfo. I created this file by truncating the new
Manalink.csv at CardID#952 (last card available in ML1.3.2), correcting a few misplaced entries (like
Clone), altering all the CardName spellings to coincide with Shandalar's specific needs, and running the new .CSV through the Magic_Updater (found in the official Update\Patch).
So to answer your question... Yes, it is possible.
You would have to either edit all the entries in the
Shandalar_20111207.csv file to reflect the text you desire and then run it through the Magic_Updater to produce a new
Cards.dat for the DeckBuilder, or replace the new DeckBuilder and .DAT file (
Deckdll.dll and
Cards.dat) with the old ones, which you can find in an old
Manalink 1.3.2 install.
The second of the two would by far be the easiest, but you'd lose all of DeckBuilder's new abilities. You'd also have to copy the
DeckBuilder.csv file and replace both the
\CardArt\ and the
\BDArt\ folder with the old ones as well, losing all the new ArtWork for Cards, CardFrames, ManaSymbols, DeckBuilder, etc.
I just tried it and it works, but there are a few incompatibilities with Duel (eg. no ManaSymbols). Like i said... possible, but not easy. You could also just use the DeckBuilder in Manalink 1.3.2 and then move the PlayDecks to Shandalar 2012. That would also work.
2012 does have a display issue with the card text being slightly out of alignment for the card's name and type
That's a font issue. Replacing the
\DuelArt\Duel.dat file with the old one should resolve that issue.