2. Vanilla adept is good and powerful but quite boring IMO. I tend to get more mileage out of human sentinel if I want explosions.
You're entitled to your opinions of course, but that one I really can't agree with. I'll try to explain why.
Most people see AA as a BE spammer, a Stasis headhunter or - generally - a mixture of both. That's certainly the way I usually see her played. However, I think that looking at her with this mindset is very limiting.
For me the most important aspect that makes AA my favourite kit is that she always has numerous options in every single situation - there aren't many (if any) kits that are more versatile in this manner. All three of her powers can be used in several different ways for several different purposes, and the fact that they all share the same cooldown (no passive powers or cheap grenades) means that you need to make meaningful tactical decisions and planning every single second. (Well, maybe not need, but then you're not using the kit to its full potential.)
Throw can be used for detonating, throwing enemies from ledges, staggering enemies (to keep them from shooting you, to keep them away or to help set up a clean headshot), throwing a-bombs at your teammates and/or for finishing off injured targets.
Warp can be used detonating, staggering, damaging, debuffing and/or priming.
Stasis can be used for trapping, disabling, blocking and/or priming.
Every time your cooldown finishes, not only do you get to decide which power to use, but how to use it and which target to use it on. Many kits don't have all that many options. AA does, and that's what makes it the most interesting kit for me.
A simple example:
You're about enter a large room, when you notice there are 4 Centurions/Troopers/whatever spread inside.
A lot of people would use RHA, put one or two of them in Stasis and finish them with headshots, and then do the same to the others.
A pro would enter the room and put A and B in Stasis, dodge a bit, kill C with a headshot, stagger D with a Trow, kill D, detonate A and B still in Stasis and destroy their remains.
The first method is effective, but it's not particularly efficient, interesting or fun. The latter method is all that.
Another example:
You're doing a hack. An Atlas is about the enter the same room through a doorway.
Many people would wait for the Atlas to enter, then fight it with Warp-Throw BEs and weapons fire.
A pro could put a Stasis bubble in the doorway and catch a mook in it, thereby blocking the doorway and preventing the Atlas from entering the room and gaining line of sight. With good timing you could detonate the mook just before it drops out of stasis.
Compare all that to another adept: the Fury.
A spawn? Run in and Throw. A Phantom? Run in and Throw. Three Brutes? Run in and Throw. A bunch of Troopers? Run in and Throw. An Atlas? Run in and Throw. Husks? Run in and Throw. A squad of Pyros? Run in and Throw. A Prime, three Ravagers, seventeen Brutes, some lazy Cerberus soldiers, a swarm of Swarmers, five Hunters, 4 x 99 Barbarians, eight Praetorians and a Nemesis doing the Nemesis shuffle? Run in and Throw.
Occasionally lolstagger enemies with Venom, so you can run in and Throw. Teleport to safety whenever you don't feel quite comfortable. Then run in and Throw.