Wincoin is just an asset that can be used for the purpose of practicing different games available on the windice platform. Maybe in future this too can get value.
Same as this bitsler has got its own token BSLR. In that separate wagering contest takes place. More we wager increase the chance of winning small amount on the contest.
Yes, but afaik there is no any contest using WIN from windice since it launched.
But, it is a dice website and it is the same website since their first days, on pandemic period while every other casino got a huge spike in their user numbers and interest towards gambling, this place got lower and lower because they never change themselves. So, it is an amazing great awesome website for people who never played here before, and after 4-6 months it starts to become very boring and everyone leaves it to find something that is a bit challenging and different, that is how it should be if you want to keep players you should have changes time to time.
When Windice was launched indeed only a dice site, but now, they have many other games and from 3rd party too so we can say they are another online casino.