I conect ICSP directly to pins. And from konektor, other part of circuit connect via 2K resistor. If you use pin as inputs, then other hardver driving state of pin. So not to have colision with programmer, put some resistors.
For MCLR use 10K resistor. As it can reach 13V. I generaly avoid using MCLR.
But this makes it hard to use debuger....