We have found the short timescale events like that don't get very much attention. It looks like the bets that are up for a few weeks work best.
I noticed that as well but still would be nice if you add the big matches as well
you had outrights for Roland Garros for example but adding at least the finals would had been really great
so IMO you should do that for Wimbeldon , it won't hurt even if the volume was low right ?
for some reason I believe having the finals will have higher volume than outright , cause they are 2 options bet with significantly less risk
also what are the plans for Copa America ? the schedule should give good timeframe for adding all the matches and should allow decent volume
so having both outright and match ups should be great for Copa America
just a suggestion of course and as I stated , if it doesn't take a lot of work to do that then why not ?