Just so everyone knows, the next release (.606b) will solely be intended to make NE fully compatible with 1153 as well as adjust a long list of troop item/skill assignment bugs, nothing else.
I'm about halfway through merging the 1.153 module system with NE. Unfortunately due to a lot of NE cruft(nothing is broken up in a modular fashion, it's all direct edits of the module system code), it's not an easy process, but so far things are still building without error.
As it stands, though, there doesn't appear to be major changes between 1.143 and 1.153 that would make the game itself incompatible with NE; in fact, if you use 1.153 with the current version of NE (.605b) the only thing you should be missing are a few bug fixes/gameplay changes that Taleworlds incorporated into native. It should, for all intents and purposes, be the same NE on each version. Note that I really don't intend to invest the time in migrating every piece of 1.153 by hand, so there might still be a few bugs that Taleworld fixed but remain in NE. If you notice these specifically in upcoming versions, please point them out and I'll take a look.
Anyway, that's enough for now. I have no ETA on .606b, but again, for reference, it will contain the following changes
* Update module system to 1.153
* Correct long list of troop item/skill assignment issues introduced with troop rebalance
* Cap all troops across the board to 10 max skill and 30 max stat (needed for 1.153 compliance)