I second / bump this, after being bearable for a while as people were building up their Red teams and epic cw keys, the Red Skill spam in guild chat is now totally ridiculous.
With the limit of 99 readable messages, in any given period at least 2/3 of those will be red skill posts, detracting from other meaningful conversation (which is the whole purpose of guild chat). I know tacticians+ can delete the messages, and I had been removing all but 1 per hero each time someone’s got posted, but it’s an unwanted chore.
There needs to be a solution to this - eg. a cooldown of 1 post per hero per player per day might do the job, or it could post only at milestones (eg. every 10th level). It could just be removed entirely tbh, or with a guild settings toggle, but probably most people would enjoy it in a less spammy form.