Just a couple of quick rulings from Session 169:
- Attacking into Close Combat is -2, but generally doing some other DX-based activity while in an already-occupied hex is -4. Rules-specified different penalties supercede this, but if not, in general expect a -4 for "while I step into close combat" or "while standing in a hex occupied by another combatant."
- You can attack to grappple a dropped weapon if it's your turn, the weapon is dropped on your turn, and you can reach it. You can't lean into another hex to get it, bobble it with a foot into your hex, or attempt to grab it if it is not your current, active turn unless you took an appropriately-triggered Wait to do so.
That's pretty much it.