Our group has really enjoyed For King and Parliament. The grid disappears when you are playing. It is very quick play, and very multiplayer friendly. The two ECW experts in our group really like the way it has the ECW feel, the rest of us like it as a game.
Basing wise, as long as the units fit in the boxes then its not essential. We are playing with 10mm with 2 or 3 40mm wide bases for a unit (depending on the strength of the unit).
Pike and Shot - if you like the command mechanism then you'll like the game. Our group (which played loads of Warmaster and then some Hail Caesar and Black Powder) grew to find the roll high do nothing, roll low charge across the table style of command roll just too irritating in the long run.
FKaP has the chance you will do nothing, but its low, and the chance of doing lots is low too. And the turns are quick so if your brigade stands for a turn its far less significant when you get through many turns in a game rather than 3 or 4.