Thank you!
I do see your point, and it does definitely change the feel, which at least takes some getting used to.
Part of the reason for the change is that the zero inertia "physics" of Deluxe/XKobo causes various technical and aesthetic problems, and can be rather tiring on the eyes, no matter how you try to deal with it. The main reason, however, is that most players are used to smoother, more physics-like movement, and find the old games rather weird. (Some even believe they're grid based, which is not the case!)
For the Kobo II prototype, I went all modern twin stick shooter (after some failed attempts at single stick controls), but that's a different style entirely, and it's virtually unplayable without an actual twin stick gamepad. (Well, it does support mouse + keys, but at least for me, that's just too slow and confusing when the game gets intense.) Different game, for different players.
Redux is an attempt at applying some of the "modern" feel to the single stick control style, rather than turning it into an entirely different game. So, essentially, what I tried and failed to do with Kobo II.
That said, the parameters can certainly be tweaked, and I might experiment further with that - possibly even offer a selection of different player ships. What's there right now is pretty much just what felt comfortable to me, after playing mostly FPS games these last few years.