Actually, even ignoring the accuracy effects there is an effective range to weapons. Outside it, they do much, much less damage (basically negligible).
As far as the saving goes, SEGA made it as flexible as possible. If someone wants to save after every turn, that's their choice (and one way to overcome the game's comparatively high difficulty). If you'd rather not, just don't. Like the optional install, I think this is the best way to accommodate all tastes.
Plus save-(almost)anywhere allows even more strict play styles. For example, on my second playthrough I plan to save after every move, but only ever have one save file. Bad luck, good luck, people dying--I won't be able to change any of it. And if I hit a part I can't do? Then Gallia just lost the war. That's unlikely, since I'll be using my overpowered characters, but I really like the idea of treating the past, no matter what happens, as unchangeable. It fits well into the theme of the game.
