Actually, not right now. I don’t believe simply releasing ‘moar’ and more new mercs, bounties etc is a good direction for this game mode. The Sunken City batch, in my opinion, is a prime example of a ‘quantity over quality’ approach, with a lot of new mercs, compared to the previous pace, but… strangely designed (e.g. Karathress) or outright broken as of release (e.g. Brann), also with a lot of new bounties, but the design of many has not seemed that diverse, creative… or, again, bug-free.
Besides, having more and more new mercenaries being released at an increased pace makes it harder to keep up, and with the tasks for the Sunken City bunch (except for Tyrael) being essentially the same in structure and repetitive (in order to keep it manageable for developers, I guess, this side of the game being notoriously problematic, but — once again, it’s quantity over quality), it becomes somewhat monotonous and boring, too.
Right now, I would highky prefer it if they focused on time-limited events, which have been fun, fixing many bugs present in the game mode and long-term goals, such as excessive coins etc, rather than focusing simply on quantity. Personally, having a breather after being overwhelmed by an increasing amount of new content released is also welcome for me.