You all do realize that this ain't such an easy thing to accomplish? Aside the "low memory requirement" that 4.4 offers, it is still a long shot. First of all, there's the thing with the drivers that we are stuck on since android 4.0, LG's final update. tonyp and pengus have done an amazing job regarding this, but as all of you might know, tony is upgrading. I'm not sure if to the N5 or Z1Mini, but regardless in one of his posts on the "The Rom" thread he stated that he yet does not know what to do with his love-hate o2x. Second of all, even cyanogenmod stated that they won't be updating older devices regardless of the 512mb requirement. Then there's NEON and the fact that even Google abandoned our Tegra. Other than that, I am more than satisfied with his 10.2 rom, and I'm currently using it as a daily driver. Other than that, install linux, sync repos and cook roms. This community has yet to die. Oh, or theme. Theming works well.
I may be new to the O2X community, but I read a lot.
"Many came and many left."
Device: LG Optimus 2X
Rom: Experimenting, but mostly Optix or TonyP's magic ROMs
LG GT540 Optimus
Apple iPhone 3G
LG Optimus 7
SE Xperia X10 Mini Pro