Some questions were half answered or not answered yet.
For clarity Physical = physical level (stats/elements), Job = class/skill/etc (archer, weaver, conjurer)
Your 'cross class' skills, are usually gained at base + x/lvl of the job. So if you're conjurer at level 2 when you get your 6 base spells, you have 6 action points and can apply 2 of them (they're 3 each). At level four you get cure for 2 aps, so you fill in your now 8 ap's with no mp attack, thunder, fire, and cure. Etc. Physical Level does NOT affect these points.
Not all action point skills will go cross class. There's an attribute called affinity that if you're wielding a conjurer staff, for example, you can't whip out concussion (a pugilist TP move). Some abilities cross class, some don't. It's experimentation, they're not described that way yet properly.
Groups are still being experimented with. I've been in everything from a 2 man party to a 10 man brigade. The brigade... sucks. There's not enough hate control and your tank cannot handle mobs worth a 10 man group. The mobs are packing some serious special TP abilities and CAN one shot.
Also, hate control can be tough. You would expect a conjurer doing half the damage of a marauder who's established 2-3 hits already on a mob would be safe before they nuke/heal, but no. You will *need* provoke and taunt to keep hate properly situated.
On the flip side, groups ARE good. 4-5 ppl can make equivalent or better job xp then solo, because you will get job xp more often, and in higher values, against tougher mobs (tested). When you get in, you'll notice at the end of the fight you'll see (you gain x physical xp. You gain y Job XP). The job xp is a total of all the little xp's you earned through the fight on each action you took. You do not receive this tp until the mob dies (tested). So, no, you can't walk up to something 20 levels higher then you, nuke till it kills you, and xp that way.
Some nicities about grouping though is there's more damage and the like and special 'hit directions' on certain mobs, so you can get around to the back and get a little damage boost, or maybe hit it from the side and 'break' something (I haven't seen the second, 'breaking' part, but one of the interviews discussed it and the mechanics are in place for it).
Pigeonholing is going to be INCREDIBLY tough for longer sit-and-grind parties, especially on healers. The reason is simple: There's very little in the way of mp regen. You do not naturally regen MP at all, you have to return to a crystal. There are some abilities for the DoM's that will help with some mp regen as they get more powerful, but I wouldn't expect a dedicated healer to last long away from an aetherite crystal or node (nodes are sub-camps, think region/area for camp(crystal)/node)
Expect everyone to need to have picked up cure (Conjurer 4) at the least for solid parties. It's 12 mp and even DoW classes should get 8-9 casts out of it. Also b/w fight regen isn't BAD. It's not going to make up for cure in a high-speed party, but it should keep the non-tanks viable.
I got a good chance to muck with retainers. You can call them at the market (or theoretically in your house when it opens). Market in LL was at the southern islands. You can give them nicknames, or the original name given, and they're unique (I believe to retainers. MrArmor was already taken. ;) ) They're also single name. They get 80 slots, and you can store stuff in them, sell stuff in the market via them (it's like the pit of zombies, be prepared), or request sales. You can also hand stuff to them to leave on the market and hopefully some crafter will come by with the right materials and repair it for you, if he likes the price you offered.
I didn't see any retainer with more then 10 items for sale (one screen). That may be because I only went through 70 or so of them before frustration set in deeply and I didn't have that much stuff for my own retainer to muck around with.
For those looking for the 'quick hit' in the market, it's going to be shards (crystals). Just be aware that it seemed the majority of those came from DoL classes, NOT killing. Killing gets you supplies for crafting.
Targetting is a royal PITA. However, yes, you can get away with no mouse (which is good, thing's laggier then dirt). Tab gets you through all targets on screen. F9 is self. F11/F12 deals with players/party members. It's NOT great, though, because you must UNLOCK the target to chuck a cure on a friendly.
Edited, Aug 29th 2010 5:06pm by GUDare
XIV: Misfit Stormrider - Kashuan
XI: Kujata - Razoredge (Long Retired) A possible retainer idea