Personally, I would please them all by first making them all very angry - and doing a complete game wipe.
But.. I would follow it with a replacement series of servers in categories rather than Blue and Seige.
FFA servers : Anything goes but scripting. Skill gains are accelerated and insurance costs are reduced a bit. PvP is always an option.
Classic servers : Similar to the current Blue servers but no magics or skills which were added after LBR, and a 30 minute lockout on facet crosses. (iow - go to fel, you can't exit to tram for 30 minutes.
(I doubt removing item properties would be even a remote posability at this point, the entire game has been rebuilt around them so taking them out would mean a whole new game)
Grueling Taskmaster servers : no GGS. Area spells don't effect hidden/invis characters - only Detect does. Telikinesis is removed. Cartography can only be gained drawing maps to 60.0. 1 resource / active gather of any kind. Shops pay 1/4 the normal value for items. Recall and Gate move up one circle in difficulty - and are unusable anywhere but Guard Protection areas... and so on. (I would love this server myself!)
And a couple for the current 2 systems.
Neon would be extinct except for extremely rare - extremely hard to get items (and only a small % chance on those).
BODs would be changed from a delayed activity, to a flat out 10 tickets / day / account. (the same basic types/skill as now)
Veteran Rewards would be based on Account Ownership rather than account age. If you have paid 10 years, your accounts are 10 year veterans. (rewards would only be available to Claim on accounts paid for that time tho.) If you transfer to someone who has no account, they are 0years.
No more than 6 parrots for a house. No more than 4 active statues at a time. No more than 2 heralds. etc. Deco is fine, but spam is pointless.
Only human/elf NPCs would carry gold on any server. Why would a mongbat have gold anyway?
Anyone caught scripting or using any form of 3rd party cheat would be CC banned (every account on that credit card permenantly gone) without any prior warnings.