I personally love first 3 games AND MK9.
The main reason why i don't accept 3D MK is that actors are not alive. Fighters look like plastic dolls, no realism. No real sense of presence. When i choose Sonya with these incradably big bobbies, or Sub-Zero whose hand muscules are thicker than his own head... i just don't believe it's an alive person, this kills all my sense.
Why i love MK9? Well, it's a tribute to the past. Boon and NRS did a good work, the atmosphere is here. All characters from first 3 games, all stages, especially Klassic costumes make feel this is the real Mk. MK9 just feels like old MKs when you play it, that's why i love it
Old MK atmosphere. The reason why i'm against new DLC characters.
And at last, here 3D models look much better. Who knows, maybe MK12 on PS4 will be in 3D but looking cinematic, ABSOLUTELY real. In that case I'll say "MK now in 3D looks good".
The second reason is characters) Just look at Scorpion, Sub-Zero! Mileena, Raiden, Shang Tsung, even Johnny Cage! They are.. SPECIAL! Just magically special, we feel real Soul in these persons. And now look at Mavado, Hsu Hao, Drahmin, Shujinko, Darrius, Diarou (honesty, i even mix up the last two). No face. No character. No soul. These characters are "dolls" as they look so in 3D, and as they feel so.
From non-UMK3 characters i only love (Fujin, Reiko, Quan Chi, Shinnok) - they are all from MK4) Frost, Tanya, Li Mei, Kira - just cause i love to play females. But OK, Frost is Special, she is only one exception in MKDA whom i really love
Even in old days i always wanted to play Sub-Zero female, so, here she is, accepted by me even before she was released by Boon.