I always do it manually. Look at JoS astro current sky (I used to use planetwatcher before the guy went crazy and shut it down), and compare to the natal chart manually. This method just works better for me, I can't clearly "see" (mentally) transits superimposed on the natal chart which is what happens with the method you outlined. I need the two separate charts to compare.
I mean if we think about it, then by just doing a search up for a country transit chart, we should try to think how much miles those transits are for.
Let's say we put capital X therefore the 23N49E and so on so forth , but how much miles/km's radius are literally affected by those transits which influence on a energetical level an amount of space , right? An amount of example 150km from within the other next degrees of a location. Therefore ,depending on the size of the country and it's neighbor's [regardless] that means the entire ammount of the 150km radius is influenced by those aspects.
I know that the major and "priority" would still show , regardless of a slight difference in degrees and distance but still tho for exact approximatively those are obvious and a must as well.
before the guy went crazy and shut it down
I guess we will never might not know why he went crazy , maybe those one's like us who want to know , understand , learn, evolve are being haunted by the enemies or maybe the guy went crazy because of some other circumstances and events , I don't know if it's just me but I have noticed that , this kind of people who build such thing or/and is dealing with such things are the one who tend to go most " crazy " , not 100% chance but many of them seem to have fallen into this "crazy" ,anyways. I enjoy chatting about astrology and such things as stuff, thanks for the chat.
I can't clearly "see" (mentally) transits superimposed on the natal chart which is what happens with the method you outlined. I need the two separate charts to compare.
I think I surely can [I would need to draw actually to explain all better and more "visible" 'I think this is due to the fact I've always had a visual memory'] , but this also depends and it's complex to speak of, we got to understand what's what and how is affected 'by whom , to what, how, when , level of intensity , potential manifestations etc by those specific energies ..etc etc'
We got this time/location which correspond and affects a 100km area of land and therefore everything that exist there, animals,plants,humans etc . Those Planetary energies and current sky would affect each being different then others, that's because everyone has unique souls and many other things to say about this, so if we want to generalize about how a population of a country would tend to react and behave based on astrology then we should consider how much radius that "current sky" is affecting as area per km and regarding in which she is dealing with then we could look at it's neighbor country and see the differences.
Looking forward for your answer and anyone else who is passionate about Astrology ,we should made this place the greatest source of Astrology there it is, which already is but extending it and brining more people which crave for this information is beneficial as we all tend to discover the greatest mysteries of life together.