I would like to have your opinion on the arranging of filters when presented on top of the page. Option 1 - Arranging fields top to bottom Option 2- Arranging fields left to right or any better option?
Even though the convention is we read left to right in a Z pattern in the West, option 1 seems clearer. Perhaps it's because the labels and fields line up nicely.
12 filters... could these be added to in the future (dread the thought)? Are they all valid? Could some become invalid, depending on a previously selected filter value?
You can categorize your filters. An example is shown below.
If a user selects geography than in country filter only countries belonging to that geography would be visible. Same case applicable for state & city filter.
Let me know if this helps.