@DSSven Love this. Have always wanted a War General rank, which would have Leader level permissions solely for war. (Start, finish/surrender, manage)
As was pointed out earlier by Marshall, my post on guild badges offers an open ended way for Gree to offer even more customization within a guild for in guild achievements with very little overhead for Gree.
Very cool, not sure your plans to accomplish 'progress' but it would be cool if there were some weekly quests achievable for the guild as a whole. This could be similar to Legendary quests that are contributed by each member of the guild. If all the stages are completed by the end of the week, prizes and increase in loyalty etc.
One big frustration in managing a guild is dealing with guild hoppers and other guilds poaching members. Incentivising loyalty is a brilliant idea.
OMG PLEASE! I noted some ideas along this avenue in an older post on much needed guild improvmentsts.
Guilds are at the core of what make this game work. The people I share my game experiences with are what keep me playing what can, at times, be a very mundane and frustrating gaming experience. The fact that you are looking to make improvements in this area is a wise decision. As if to illustrate my point, a long time ago there was a survey when Gree took over related to your guild... my answer was...