This subject has been mentioned a few times in the past. By all means if someone finds a recent link, please drop it in.
Any ideas for things you'd like to see in an Event store? For example:
County renown kit
You could have this option at Count or above. How about a tier-specific county "renown" customisation kit, limited to 1 per county? Might allow you to pick one of a huge number of different skills and slightly increase the county's proficiency at that skill. Might simply add a handful of (randomly) skilled NPCs to the county, plus a small number of appropriate workplaces automatically placed. You could even show on the map if a renown kit was applied to the county, and what it was, to ensure that skill is represented. A means of making your region stand out on the map and catch the attention of those seeking a skill.
Settlement renown kit
You could have this option at Mayor or above and could get 1 of these as well as a county kit if you were inclined. Limited to 1 per settlement. The settlement on the domain screen could indicate is a renown kit is applied. As before, pick one of the profession choices. This time, the kit could have less NPCs ie 2 with random skill applied to the settlement and a storefront/station as applicable etc. A means of making your settlement stand out a little.
Individual renown kit
Might include a single use "book of basics", tools, perhaps one of the tools being rare, along with the storefront kit. Limited to 1 per person so not "everyone" is skilled at everything, though we know that would be pointless and silly. A means to ensure you have the basics to get started.
Subsequent store events might list packs for supportive trades and supplies.