The XL ratchet (will be 78218) for 1/2" drive Nano sockets is an 18" long wrench we've recently still been tweaking due to a future possible expansion of 1/2" drive nano socket range we're not tooled up for yet. With the expectation it may work on even larger future sizes, it required beefing up which we've achieved. It now has a proof torque just exceeding 400 ft-lbs, and will be coming 4th qtr of this year. Maybe early 4th quarter.
For the 4110 extra deep set, there isn't so much a "standard" set when it comes to chrome extra deeps like there is with traditional sockets sets. Like with most things in specialty, we make the kit around the applications we're targeting more than trying to check a box - and none of our field testers ended up using the 18 or 19mm prototypes that were made.
Not against the idea of expanding the offering in the future if people like the set, as we're known to do with socket sets. But our usual action plan is to keep sets high quality but affordable otherwise we won't make it, and we think we achieved that.