There seems to be a reasonable gap between the front of the boot and the top of the crampon. There's no apparent movement side to side, but if I compress the boot into the crampon, the gap reduces in size.
I've tried the toe bail in the 3 different positions, and farthest forwards produces the smallest gap.
Any suggestions for a better fit, or is this as good/bad as it gets?
I suspect you'll be fine. Having a decent fit is obviously important but people can get a bit precious about it. Particularly if using that style of strap at the front clip at the back, you won't go far wrong. It's very hard for the boot to 'escape'
In terms of the gaps they don't look ideal, but not a problem either. I wouldn't be concerned.
Can't make it out too clearly from the 1st photo though - are the front points aligned with the boot, or are they more off to one side? It looks like they're sticking out from your big toe (or little toe) rather than from the middle toes.
Once you start clomping around in them a bit you'll probably find the boots 'settles' into the crampon and will get snugger. With that type of strap arrangement you can just crank it up a wee bit tighter.
The only thing in the pictures that I thought looked odd was the width of the front points - the outer point looks a long way out by the little toe. Might not make any noticeable difference in use but I think with my dual point crampons the points are a bit closer together.