well..
I am quite amazed that point'n'clik with mouse is not implemented here, and even considered unimportant.
i was playing lineage2 for quite a moment, where it is, it works well, it makes game much easier to play,
and you can focus on other things, you dont have to strain your toes with pressing arrows all the time.
you point, character starts to walk to that point, and if there is a pit beetwen you and target you fall in.
any interface keys are assigned to alt+ key while f1 ..f10 corresponded to a quickbar shortcut icons.
let me desrcibe lineage2 interface with an example. while i dont like game very much because its mainly pvp/pk, and for other reasons(like pre designed character builds), i think its interface and movement system is just the best

[[YES i know that PS is opensource project with budget 0 and lineage2 is a commercial mmorpg, but thats really not excuse

]]
http://img156.imageshack.us/img156/1949/shot00048ala7.jpgyou can see a screen here, instantly noticing an iterface - its very well made, icons are small, you can arrange their position on the screen as you like them, also there are no fancy ornaments (like that tree motive in inventory window in PS) that make it very clear and easy to use. in PS we have big brown buttons and fancy windows, that isnt very good idea for me.
ok.
in the right is mentioned quickbar, in left bottom part of the screen you can see a chat box.
since all commands are assigned to either F1 -F10 keys, or performed with alt/ctrl + key, whatewer common key you press will make its letter apear in chat box, like pressing wsad and enter will make your character to say wsad

so keyboard is used mainly for chating.
thats the problem, apart from weird movement in PS, there is also issue with typing an answers and switching between BIG chat box and world - you can accidentaly click chat box and be unable to stop autorun in time.
play l2 for a moment you will understand why this system is effective while very simple at the same time.
you could try implement that system into PS! this would really make it great and would attract more players (every single person I know that played in PS complains about player movement, so...)
I dont know if I make myself clear enough, its late in the night, so i will make it short and sweet:
player movement and interface system is not something that can wait till better times.
it is one of most important things in the game.
you can have skills and models not implemented, but not the interface and player movement.
easy and intuitive interface is what makes difference between good and not-so-good games, it really
does matter for many people, of course you can get used to PS system, you can get used to anything really, but thats not the point.
regards,