The only differences provided in terms of size are for the heights:
1,475 mm (58.1 in)
1,490 mm (58.7 in) (Pakistan)
1,500 mm (59.1 in) (X, Turbo RS and Works trims)
Therefore we’re not splitting the Gen 8 and it will remain singular as the models are similar enough to be kept the same.
The other Alto and Wagon R models will likely be split between the Maruti Suzuki and Standard Suzuki versions for applicable model years where there is a substantial difference.
The next version being split would be the Japanese Gen 7 Alto and the Maruti Suzuki 800/K10 when I come to it.
As for the different Topics I still don’t see the point.
Users who want the Japanese version will Vote for it in the Poll.
Users who want the Pakistan version will Vote for it in the Poll.
If they were topics it wouldn’t change anything as users interested in the Japanese version wouldn’t be voting for the Pakistan Topic.
If 100 Users want the Japanese version and 100 different Users want to see the Pakistan version then the Poll will be split 100/100 which fulfills the exact same role as having two different topics with 100 Votes each.
If 20 Users then want to see both then the Poll will have a 120/120 split which also makes it easier to work with as opposed to the users having to search for and vote on two separate topics.
It doesn’t achieve anything outside of making us keep track of two entirely different topics instead of a single poll.