In Guru Granth Sahib it says that the Gurus are God's incarnation. "In Satyug, You taught humility to Bali raja. In treta, You defeated Ravan as Sri Ram. In Dwapar, You defeated Kans as Krishan Murare. In Kaliyug, You have arrived and established your sovereign rule as Guru Nanak, Angad and Amardas. " Even Sri Ram and Krishan had different personalities yet they are also Jot of God.
I think people already know that the Gurus are different. Some were writers, some warriors, some ruled, and some went on udasis, some initiated through charan pahul, some treated the sick, some treated the wealthy, some through khande di pahul, some asked for horses and weapons, some gave their life.
I doubt there will be a million questions asked. There will only be one. and that would be "what does having 1 jot really mean if the Gurus have different personalities?".
Sikhism clearly says that all ten Guru's should have been considered as single entity
c. Regarding ten Gurus as the effulgence of one light and one single entity.
And yes it will raise plenty of questions if we start considering Guru's as different.For example why are we mostly following Guru gobind singh's version of sikhism and not of other Guru's?
Which Guru's teachings were right which were wrong?
Why should we consider so and so as Guru when we belivee that their teachings is wrong
The above are just sample questions there will be many many more