My 2 cents:
Upgrade the forum software to fix he numerous gitches (new button/quote button/image uploads etc) since the last upgrade was undertaken
Re-instate PMs for users with a post count above 100
Replace absent moderators & promote a few extra,.. a forum this size should have 15 - 20 global mods ideally
Create a post independent user group for suppliers so that they can be immediately identified by users
Personally, real names don't bother me,.. get rid of silly names, but otherwise leave alone.
Relax the rules a little on supplier interaction,.. the majority of these guys are major contributors to the success of CIU, and are truly helpful. A generic "No taking advantage of the forum for your own advertising" rule should suffice, but give them freedom to comment where their input would be genuinely helpful.
Maximum allowed font size can be set in the administration area of the forum,.. perhaps this setting should be reviewed & anyone banned for using to large a font could be reinstated?