However I am a little confused as to the logic of some of your theories and accusations against 'sects' as you call them, and your theory of ending the line of Gurus as your doctrine envisages.

However, If this is your understanding of Gurmat, then may your faith bring you salvation, and although I don't agree with your theology on the concept of Guruship I respect your faith.
According to the teachings of Satguruji, and I agree with perhaps 99% of your article, your views on the definition and understanding of Satguru and His Gurbani are somewhat flawed.

Firstly you quote some of Satguru Nanak Devji's Sabads:

Sachi bani mithi amritdhar
Jinh piti tis mokhdwar."
(Malar Mohalla 1, p-1275)

'The True Bani is sweet-nectar
Whosoever is devoted to it, attaineth salvation."
(Translation of the above)

"Sachi bani sion dhare piyar
Tako pavai mokhdwar."
(Dhanasari Mohalla 1, p-661)

'Whosoever devoted to Eternal Bani
Will get deliverance."
(Translation of the above)

Pray, which Gurbani was Satguruji refering to here? The Aadh Guru Granth Sahib had not come into being when Satguru Nanakdevji composesd these Sabads.

I cannot speak for other 'sects', but if you are including Namdhari Sikhs within your accusations, then I can vehemently reject your claim that Satguruji gives Sikhs some verse as Gurmanthr.
Reference:: Sikh Philosophy Network http://www.sikhphilosophy.net/sikh-gurus/4552-fundamentals-of-sikhism.html
Reference:: Sikh Philosophy Network http://www.sikhphilosophy.net/showthread.php?t=4552

We are not told that repeating it out aloud will send us to Hell, although as per instructions within the Aadh Guru Granth Sahib, which your school of thought will wash over, we are told not to repeat Gurmanthr out aloud.

Gurmanthr is that Manthr, Naam which according to Bhai Gurdasji, Satguru Nanak Devji spent 36 Yugs to prepare for the salvation of us Kalyugi Souls. It was and is still given secretly in the ears by a LIVING Satguru. The 'Vidhi' for despatching that Naam is also written within the pages of Aadh Guru Granth Sahib.

You come across as a very learned gentleman. Please do yourself a favour; learn without prejudice.