Turkish i/İ sounds pretty similar to most of the European languages. Italian, French and German pronounce it pretty similar. Also removing umlauts from the other two vowels ö and ü to write o and u has the same effect as removing the dot from i. It is just consistent.

No, what I mean is, o and u get an umlaut (two dots) to become ö and ü, but i doesn't get an umlaut, it's just a single dot from ı to i. Why not make it i and ï? That would be more consistent, in my opinion.