Considering that this combat tutorial (
https://www.youtube.com/watch?v=Qr2t2Si60Ak) covers so many different mechanics without even mentioning the weapon abilities like dragoon jump or the summons, and with all of this being in a demo that was made before the game had even reached 55% completion (meaning that there are probably going to be 10x more options and complexity in the final game with more weapons, combos, and abilities), and other options that are confirmed to be in the full game (such as magic) and things they are working on (like manual weapon switching), and the combat seems very meaty to me.
This game also seems to have a sense of humor I'm digging, such as in the following videos:
Crazy chocobo lady -
https://www.youtube.com/watch?v=wZ62k49PRiQGladiolus comment - "Gladiolus: Stop b*tching, start killing." @26:23:
http://www.youtube.com/watch?v=nYTVxsQG_tc&t=26m16s@Dan: You may be right about it being brainless and having way more flash over substance, but I don't think the summoning video alone is enough to confirm that. Big numbers might be a sign of lazy programming, but that remains to be seen. However, Square Enix has done nothing in the last ten years to warrant the benefit of the doubt, so I see no problem with you being skeptical.
I have been up and down on this game myself in cycles, sometimes things make me lose interest (lack of character switching confirmed, possible lack of airships), and others keep me coming back to find out more (possible gambit system, phantom swords, summon, combo customization, etc.). Right now I am just at the point I hope it is good because I want a good FF game for once since the PS2, but if it really does suck I hope the game tanks hard just for making me wait so long for more crap.