Speaking for all makes of arrangers, they just keep on getting better & better. Not too long ago, many over here stated that we've reached the pinacle of arranger technology. Yet in spite of this, one new model after the other emerges & every new model sounds better & more realistic.
As long as the world is not at war, the technology will just keep on getting better & better. We have so much to look forward to in this regard.
Then there are those who keep on creating utuilities, styles, sounds, multipads & a host of other things for these already stunning machines.
So off course we keep on sounding better & better. Just the ability to operate these machines at close to their max requires a new skill of musicality, with a lot of technical stuff attached to it.
Does it make the arranger player less of a musician? I doubt this very much. They might be different, but they are just as much musically included as the guy on the sax, piano, trumpet, guitar or whatever...
Some pilots fly hang gliders, others microlights, other Jumbo jets, other sophisticated fighter aircraft. They have one thing in common - they all fly & they are all pilots, regardless of the technicality of it! And each one of them handles his/her flying equipment to the best it can be handled & fly. So it is with arrangers in the lives of musicians too.
As for the amazing part - I would not mind if some say: Wow, that machine is amazing, especially in the way you operate it. After all, we are individuals controlling a full band, are we not. I have no gripe if someone is impressed by my stunning fully automated guitar player. After all, I'm only the conductor of all these incredible musicians following my every instruction to the letter!
Most of our feedback is that we play well with & use high quality midi files and/or backtracks when in fact we are always performing live. To the contrary, it makes me feel good as it means that what they hear cannot be perceived as coming from any level of live playing. Man, I just LOVE my arrangers!
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Make sure you'll fly forever!