I think the drop style has changed to old school, when you select something it drops it without that + sign thing. Looting containers is now more complex for no reason, but whatever. Maybe there is some kind of change log somewhere, didn't read it. And when you throw something you have to select * for other than money, can't really understand why.
Sometimes I play Nethack and it's still quite nice. In fact what I like about it is the simplicity (at least in early game before the Quest), you don't have to do anything special, but you can. The current "run" I have with monk has been quite hilarious. I started by stealing a huge scroll shop in like second level of the dungeon, then escaped to gnomish mines and went to bottom level (the special level after mine town), almost got killed there by two vampires (the other one was a lord) that become out of vampire bats (I think it's a feature in that level). Luckily I had two orange potions which were full health potions. The I ran into a mumak which almost killed me. Then, back at the shop level I was almost killed by the shopkeeper, but I was able to go around it with a scroll of teleportation and continue to sokoban, where I'm now in the last level of it.
I've almost never played with a monk, but if you get AC low it's quite easy. I have only the original gloves and robe (improved with stolen scrolls of enchant armour), plus iron boots. No weapon, I think it's what you are supposed to do? AC is -2 and HP 70. Monk seems to be a ridiculously tough tank, you can bash through almost everything with it. Also, monk has healing spell as default which helps a lot.