We have a new PCB that has 10 layers. There are plenty of gnd and power planes. I have had to do some modifications to this board, including removing and replacing components. I have plenty of experience with soldering and I believe this is one of the hardest boards to work on. What I am asking is what techniques, tips, etc. I can use when designing a circuit board that would give thermal relief and not be as difficult if the need for hand soldering is needed.