I don't see any negatives from it.  Some example commits enabling features based on it:

https://github.com/CyanogenMod/android_frameworks_base/commit/0d78f566ba83a10a88da42b3767096be61904374
https://github.com/CyanogenMod/android_frameworks_base/commit/d41a61f865dc69cb17d1a2b3841d84cdeb60388e
https://github.com/CyanogenMod/android_system_core/commit/fbbb1a75b288a83da249c31295b031bdb5e7c0c2

All recent Nexus's benefit from it (N4, both N7 2013s use it).