Circular Bases, yes: CIRCULAR (for SPACE BATTLE HoTT)

Oh Lord Brian Boru...

Now you have gone and given Stevie a lot of new ideas.

Joe Collins

Hmmm…HoTT and DBA are both ‘positional’ sets of rules, where the location and
orientation of an element in relation to others provides vital tactical information,
without the need for on-table markers or fussy paperwork.
So it’s important to know when elements are being overlapped or flanked.

Still, there is one method you could use where the bases can be any shape you like…
…play on a grid.
Providing the base stays within a grid square, it could be a circle, a triangle, a hexagon, whatever.

Another method is to mark the circular base into four quarters like this:-
                                        
That way you can still tell the front, rear and flanks…although it’ll be less precise and messy.

Alternatively, glue the spaceship picture directly onto your circular disk, and have
the whole thing on a short stalk made from a drinking straw, so that it floats above
a conventional HoTT base.

(Otherwise, use your 40mm circular disks for the Terrestrial Rocky Planet Bases...)

Yes, I'll take care of that.

The shape of the space crafts often shows clearly their front or rear etc.

And if not, I'll mark the bases or the prints...

A very beautiful side effect of circular bases is this: It is easy to change formations, from square or line to wedge/cone (see picture above). 

This might add a lot of flair or even deepness to the game, if we allow also flanking positions of 60° or 120° (besides our usual 90° and 180°) due to multiple base to base contact.

I feel there are a lot of interesting possiblities...