The Features I've used are the Aimbot, the Triggerbot, the ESP (both item and character) as well as some misc settings (No Spread, No Recoil)
The Aimbot - 8/10
In and of itself, the Aimbot is somewhat reliable. Certainly, there are weapons that work better or worse, some work better at close range, some are entirely unreliable, even with aim prediction and no aim smoothing, whatsoever.
From what I've found, the Slug Rifle (during testing) was one of the more reliable guns, while guns that I would normally be expecting to work similarly, like the Heirloom Rifle were a 50:50 chance to hit from range at best.
Overall, however, in close quarter fights is where the Aimbot really began to shine, especially due to the existence of all the movement skills, it really helped you with sticking to your target.
The Triggerbot - 5/10
Quickly stopped using it, since especially paired with the aim prediction, this was more of a mess than was good for me. This might've been my least used function, since the Aimbot was satisfying my needs just fine.
I'm sure you could make it work, hence I'm giving it the benefit of the doubt score-wise, but - again - I feel like it is an unnecessary option if you already have the aimbot active, and I assume the less options you use, the less likely your gameplay looks extremely obvious.
The ESP - 9/10
The only downside of having as many options as the ESP offers, is the fact that the screen occasionally gets cluttered, especially when the loot-explotions happen late-game, during a fight. Hence the 9/10 for being slightly too intrusive when it comes to showing all the items.
Misc (No Recoil / Spread) - 10/10
Not much to say here, other than "Works as intended", and that's pretty much as good as it gets. The anti spread / recoil options help tremendously when you're making the Aimbot work, and give it that little extra edge. Everything else seems to work fine as well, but I haven't used them much.
Now, unfortunately I can't say much about the security or the support of the cheat, except for the fact that I have not been put on a ban myself, and that pretty much everything from gaining access to using the cheat was self-explanatory.
Final Conclusion
I would've loved to see the cheat go to work with the introduction of the new hitscan weapons, but alas, that'll have to be coming from someone else who writes a testimonial in the future.
The features I've used in the patches that were active during my subscription time would be getting a total score of 9/10, and while some features feel unnecessary to me, props to giving us the full offer of helpers to make it into a complete and convenient package.
From what I've gathered, if you're looking to put the effort into getting invited for the Cheat, it's most likely worth it, since it's easy to use and functional to a degree that is satisfactory.