Don't believe anyone will get up in arms about your proposed mod, around here, if it fits your needs, it's all good.
MOD away. What you'll likely to get it . Even more so when you post pictures inspiring others. That said, MOD away and hopefully others ( modders ) will come along with ideas.
May I offer a suggestion? You could insert a piece of wood or other material, opposite the drivers, to fill the handle and avoid hot spots. Or even find some other tools to fit there, like a bit holder or something equally useful.