Ok so, about this Roadmap !
The new Career Revision brought some handling for the tooltip, most skills now use an "internal ID" this is as much used for some GUI display (Training Trees etc...) where it use this ID as primary key (for Ability, Specialization and Styles mostly), than for effects display (Buff/debuff), and from version 1.110 and above used as a "cache ID" key for client tooltips description.
Spell Tooltip needs to be manually initialized, for now there is no relation between Spell Tooltip and Subspell Tooltip, Delving is really bad due to current spells implementations...
The packet code got some upgrade to enforce Tooltip Update at login, so shards shouldn't bring "cross talk" between cache ID's.
Actually even Style Tooltip display are going wrong, and Realm Abilities Delve doesn't seem to work
Styles should only need some tryout on live server to get most valid values (it's shouldn't be long to even get ALL tooltip there isn't much styles), they should probably have some link to spell tooltip for Style special magic effect...
Ability will need to be converted to spells for much of them, and it all sum up to our really POOR spell handling...
The road is still long to have some behavior similar enough to live to have something that can work correctly with client 1.110+ (Delving being mostly removed, the later clients rely too much on tooltips for players to have a nice experience on DOL !)
My next step may be to merge most of my "Spell Handler Updates", and try to reduce even more scripted spells behavior, this would be a good audit to implement the tooltips delve depending on spell handler in the same update (as they can use dedicated subclass from DB this is the best place to implement specific delves), fixing spell delving should allow to display correctly Styles Effects and Ability Effect !
This would bring the Keep Manager Update really needed for New New Frontier for much later...