When we did our EMC2 a number years back-- we went to a 12% root -10% tip and same fuselage/wing length --
also tall thin fuselage (6" wide).
Finally got out of the pattern business -
anyway this setup works very well for lots of rolling snapping stuff.
slow speed also.
pattern is dreadfully slow in evolving -
Our newest aerobat will be 80" span - 84" fuselage - 1900 squares - not for pattern - but scale aerobatics
most pattern "designs" are simply minor changes to a couple of standard layouts.
they all work --