Don't they still have the "multi reddits"? Just make a group for the smaller ones. Or a simple bookmark like reddit.com/r/smallsub1+smallsub2+smallsub3 etc. A bit work upfront but if you are annoyed it may very well be worth the time.
It might help a bit. But really the problem is I want to see the top 10 posts from the last week that I missed. Even grouping smaller subreddits together, /top still sorts them by the size of the subreddit and is mostly useless.
