Just in case anyone's interested i went ahead and installed a CM11 based 4.4 Kitkat ROM for the SGH M919 (Tmo S4) works good so far, still getting used to the new interface, i will say this to anyone considering installing it, consider all your TouchWiz features, if you find yourself being a big user of them then youll probably not enjoy this ROM as it does NOT have them, on the plus side the ROM is smooth and light, no lags or delays what so ever, and whats best, no MPCS BS bloatware.
I followed many threads i found very useful on our GS4 subforum, i wanna give a huge thanks to @ARocker, answered all my noob questions and clarified any doubts i had.
Anywho for those interested, just to make sure, do keep in mind that to do this you must
first root your phone,
then make a Back up(Custom Recovery), and
Finally Install
BOTH files: the
ROM file of the version you desire (of CM11), AND the
Gapps file.
Just follow the steps on this thread very straight forward and noobproof
[ROM] CyanogenMod 11.0 | Android 4.4 KitKat [UNOFFICIAL] [Jan-8]+[NIGHTLIES] - xda-developers
albinoman887 is currently doing 'nightlies' versions, i used the one for 2/1/2014 since the one for 2/2/2014 would freeze when booting up.
Once you've installed the ROM you will realize youre not getting 4G/LTE, in order to get it working again you must follow the simple steps on this guide
http://androidforums.com/metropcs-g...96061-get-4g-lte-working-data-connection.html
For those of you who havent rooted your S4, here is another simple guide on how to do it
Root T-Mobile Samsung Galaxy S4 M919 on Android 4.2.2 using CF Auto-Root
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OBVIOUS DISCLAIMER____________
I'm NOT responsible for anything that happens to your phone, PROCEED AT YOUR OWN RISK and do keep in mind that by doing this you'll be voiding the warranties on your phone, IF youre careful enough and follow these simple steps, youll accomplish 4.4 CM11 KitKat on your SGH M919N, if not, you may end up Bricking your phone. Remember im NOT encouraging or suggesting anyone do this, I'm merely sharing my experience and sharing the steps i followed.