This has already been said, but I would like to see an improvement on the search and an added "suggested" feature.
One way you could improve visibility by suggested titles (If you liked this you might also like these comics) is adding standard tags. So besides the custom made tags we now can set (and are searchable but only one at a time), there could be a LARGE list of standard tags that creators can check according to what suits their comics. From these tags automated suggestions can be generated matched against what comic the reader is currently following.
Perhaps readers can even submit what tags they want to follow, and as soon as something is published meeting the preferences there will be a recommendation.
Also, the search needs improving to be able to narrow down a search. I don't just want everything that is "sport" I also want "sport +vampires" possible excluding "sport +vampire -music".