Careful with that! I updated a Nexus 7 (flo) recently to Lineage OS, set a pattern lock (using one of the larger or the largest grid - mostly Just Because™). Enabled encryption. Tablet rebooted and asked for my input to decrypt, presenting a 3x3 grid.. :-)

Wasn't a big deal for me, since I just tried to revive that thing anyway. But that seems like a bad idea..