Some additional features I would love to see in the digital clock:

Optional hourly chime
Set an alarm

with optional redstone pulse (length option).

I am aware this probably isn't the place for suggestions, however I couldn't find anywhere else to post.

I will look into this. Definitely maybe modes to pulse every minute, hour, or day. Maybe some special chimes for when it becomes day or night.

Would also love the ability to place them on a wall

Try putting it in an Item Frame, like w/ a vanilla clock?