Casuals don't care which era the characters are from. The 3D era characters are only really contentious with the hardcore fan base and we only have four 3D era characters in here anyway.
yeah
for casuals, all of these 3D characters, just sound as "new characters" for them, and this, just bring enough attention and curiosity factor for them, to buy and try , kinda, "hey, did you saw that bat vampire girl on the new MK game ? Cool as fuck!" , hehe
and for the old school gamers, that are more open minded, that are not fanboys, and are not radical purists ones, and had a urge to play again these characters one more time, this is a new chance to play them, in a modern game, with modern gameplay and mechanics, so
its a win-win scenario situation
I personally, hated all the 3D MK era, so, I stopped playing MK games after MK4, and returned only when MK9 was announced; but now, is a great chance to play these characters , because they all came back renewed, overhauled , updated, with modern graphics in a modern MK game, so, I am truly and really loving all of them, and cannot wait to try them all in the full game ...... they way NRS is bringing them back is pretty good, so, chances are that they will get much more popular and gain new fans due this smart move that NRS did, hehe