The lack of Jump-drive isn't an issue, since anyone competent will have their base "near-ish" to an asteroid belt, but the shuttle lacking a jump-drive is a bit of a loss. [if it gets attacked, it's gone cause it can't jump away]
the absurdly tiny size of said shuttle though, means it being lost isn't an issue at all.
The bigger hit is those short-barrel mining beams. While I usually have all the time in the world to mine, doing the mining is as boring as usual.
If those were longer barrel beams, at least the mining would get done much quicker.
I love the look of the ship though.