Face is already added, with the intention to use it as default for any pov or closeup action. Adding other closeups should be quite easy.
I intended to make use of suffixes, because of being able to specify and still keep them in the same category. For example a "sexdoggy" counts also as "sex". So if the code finds no "sexpov", the pool for "sex" still includes all actions without having the pictures physically duplicated.
The problem with doing that for the other existing types like "cowgirl", "revcowgirl" etc., where it would make sense to rename them "sexcowgirl" and "sexrevcowgirl" (or a lot of lesbiantypes) etc. to have them in the sex pool without extra coding (actually now the default is handled via a case code), would be the extra workload of renaming files in every girlpacks. That is one reason i asked about pregtypes, because if i left them out or radically shortened the existing pregtypes, you could simply add sexcowgirl and keep the original cowgirl code and defaults and simply code cowgirl as 1:1 default for sexcowgirl (redundant for backwards compability).
Currently i have a problem with too many imagetypes, because my gallery crashed a few times, which i fixed by drastically reducing the types. Now it works, but i still have fear that the crashes might have been linked to the amount of types (i have more than 340, now under 300)...though. It also means a lot of more code in general.
Handling the specific types as you quoted is a problem, because it reads and expects numbers from the end. You might specify it in a way of "strip" (general), "stripstage" (for stripping on a stage) and for your special types "stripstagespecialtypeA", "stripstageclothed", "stripstagetopless", "stripstagecustomerA" etc.. You could also do "strip_01type_009" where 009 works as index number and 01type could be your special stage of undress/customer combination.
What would be possible is to add customer categories (like noble, rich, common, poor, criminal) and also add a few special chars...but each would have to be defined in a unique type. For unique chars it might be better to either make them their own picpool (you would use the sex pic from the other char not the current girl in that case) or add a category of their own (like "mayorsex" or "mayorescort") where it only shows this special girl doing the actions with the prefix character. If you really want to show only charA doing actions with charB, you could do it with a check for pics in charAs pool starting with charB and viceversa.
If you look at the escort job code, there was an idea for special chars (sheriff, mayor etc.) already.