I have owned and used an H2N for a long time and used it to record many things. Gigs, band practices, meetings and some foley.
This accessory pack makes a dramatic difference in how the H2N can be used, in my opinion.
Previously I always had to be very careful with background noise. The Mic is sensitive (by design, this is not a criticism), but that also means that recording with it outside can be extremely problematic with due to the wind. The wind shield adds a whole extra dimension to where I can record. It doesn't compromise sensitivity.
The mic handly and tripod also add a ton of stability to the recordings as well as enabling to move around more. Combined with the remote you can use both your hands as you're recording much easier.
The rest of the accessories are useful and as far as I can tell, quality.
My only regret is honestly that I did not spring for this earlier. Even though the H2N is old, it's still useful to have around, and this pack certainly gives it a greater lease of life.