Few traits? dude there is 1 thing in Islam that you dont cross...worshiping anything else...once you cross it you are no longer a Muslim...fullstop no ifs buts or anything that is what you can say the border between being a Muslim and leaving Islam....So for you may be "few traits" but they actually are major traits...
That isnt the only problem....Deobandi, Naqshabandi, Brailvi, Ahmedi and every sect possible is literally from India...The founder was born in India and raised there....I am not sure how the founders became popular but each preached this major differences and called it Islam...this is where the sectarian problems come in ....
Before we only had to deal with Sunni and Shia but thanks to India we have to deal with everything else!
Revere is 1 thing but worship is another...You can respect someone without worshiping or asking the dead for help!
Syedna Molvi Talon giving fatwas of kuffar.