Honored Contributor
Honored ContributorI'm not sure it will make routing easier in your case, but the JTAG can be chained, so you only need 1 connector.
In the blue plane, sometimes the empty space between traces looks a bit thin. Making it wider will make manufacturing simpler and more reliable. Nitckpicking (meaning, I wouldn't bother myself to go back and redo it) There's a few places where you have sequences of thinner and thicker traces. Ie, between C102 and U1. It also happens when you change planes, ie, traces on blue plane being thicker than on red plane. Instead of some thick traces, you could just use use fills to fill all the available areas in the red plane with 3.3 and 1.8V zones, since copper is free.
