mcMMO:
I'm all for getting mcMMO, as it's a wonderfully useful and versatile plugin, but we are currently considering the amount of drag it may cause on the server, to try and save all of the information for every player.
Because the server is personally (and professionally) built and owned, the physical capabilities are always a concern
Despite this, mcMMO is high on our priority list for "must-get" features.
Balkon's Weaponmod:
This mod is really intended for PvP usage, and not so much SMP. It can be used for this, but will drastically change the SMP gameplay from its intended (and our desired) style. Hence, it's a "mod".
If we were a PvP dedicated server, we might consider this mod more heavily. However, as the majority of players are SMP-side, we are more focused there and will continue to be for as long as players are. I do not think we should use this mod.
However, this is a forum for discussion. If you think we should, please tell me why. Do not consider my word on this a be-all-end-all. Without player input, this forum is not a discussion, and therefore worthless.