The activity email notification is great but often times it notifies me of activities that have been posted but are not open for registration.

It would be great if I, as a hopeful participant, am notified about an activity I'd like to register for at some point. If I could "like it" or show interest by "subscribing" to the activity that way I can get updates if anything changes regarding the activity (e.g., roster fills, registration date changes, trip cancelled, etc.). The number of "likes" or "subscribers" could be visible on the activity page to notify other participants of levels of interest by other mountaineers in said activity. This type of information could also be useful to the trip leader in case they wish to expand the roster or lead another similar activity in the near future. This info could also be pertinent to committee and branch leaders who wish to see what specific activities or destinations are drawing interest without having to poll the membership.

At minimum, it would be nice to get a reminder email 24 hours (or a user selectable time) in advance of the registration opening date/time for an activity I'm interested in rather than having to set calendar reminders on my own to come back to an activity.