Whatever you do, you are going to love it!!!
Play around with those 4 blocks. Say upper left is block A, upper Right B, and lower left C, lower right D. the units are A1 A2 A3 A4, etc.
What if the pivot was not quite 90 degrees?
turn so the points touch:
A2 to B3
A4 to C1
B4 to D1
and I didnt write this one down, but probably C2 to D3.
your joiner pieces would be much smaller. Yes, you'd lose that star in the middle of the four.
Just wonderin' :-D