At first glance, it seems to be presented as an overall 'generic' Skitarii list
Nah, it's no more 'generic' Skitarii than the Steel Legion IG list is 'generic' Imperial Guard.
It just represents the PDF forces of one particular Adeptus Mechanicus Forgeworld.
That may well be a fairly widespread style of Skitarii, perhaps even the most widespread style, but there are also going to be Forgeworlds that have different styles, like Mars with their greater access to the full range of Super Heavy Tanks, Ryza with more plasma technology (Perhaps including an "Ordinatus Ryza" with a 4th tier Plasma type weapon system!), etc.
As it stands the Titan list, even though leagon specific, seems more 'generic' and more readily 'adaptable' to the various legions.
The Titan Legion list is fairly generic, ultimately due to the nature of the Titans themselves.
There is scope for a Legion list that concentrates on close combat weapons with less choice in ranged weapons, I guess.