It would be nice to have exits to arcade aswell as bizaar.

It would also be nice to have a AH in guild hall this would make guild members use thier halls for more then sitting.

Practice areas for pvp based stuff would also be a great help.
This would allow guild members to team up and practice lockdown.
allow 1 vs 1 and up, There shouldnt be any reward for these matchs just practice with guild team/s.

Custom token trader monster would also be a nice touch for easy crafting in guild hall.

These could come with a price paid buy the guild.

Some sort of bank system would also be nice add-on for this aswell.
Allow members of the same guild to deposit crown/ce into guild bank for spending on guild hall add-ons

Maybe a few new designs for guild halls can be added aswell to allow more of a custom feel to
each guild hall.

Guild emblems would be a nice touch aswell these emblems could also be placed upon your knight.
All custom coloring aswell as a few premade emblems would set knights apart.

These things I dont think should be free.
(I would just like to see alittle customizing to set apart knights from one another)