+1 for X-Piratez openXcom MOD. Thanks for reminding me, I'll have to get back to my playthrough of it this weekend.
It gets pretty grindy later on, because there's SO much to research, but I loved the early game combat. There's nothing more satisfying than flamethrowers and hammer gals, backed up by a few explosive cannonballs for fire support. Xcom original actually does melee pretty well when it's the focus, while the variety of weapons later on keeps it interesting. Also, a great take on the armour system, with plenty of playstyles available for when you're getting bored of arrow lobbing or sniping everything.
Totally recommend the mod to any Xcom fan.
Hammergals aren't what they used to be because there is an evade mechanic now where shooting next to an enemy has a high chance of that shot going a random direction. As hammers use the shooting mechanic they are affected as well. The enemies suffer from this as well of course, and the AI being what it is means you can be safer right next to an enemy, though safety is not guaranteed, so it is a nice game of chance.