Hey.
Your points regarding the mughals etc. doesn't really hold much strength due to the fact that we don't hold our islam through what others did. Yeah they were muslims, but who actually said that they followed the islamic law in every action that they did and who said that we have to follow their example?
It's so simple to label a whole group of people under one label, just because some members of that group did an act. For instance, people could say that all white people support the war in iraq, when only a few may have agreed with it. Therefore - these kind of arguments don't really hold any strength.
Anyway, like i mentioned before - islam is based on the Qur'an and the way of our beloved Prophet Muhammad (peace and blessings be upon him) and his companions (may Allaah be pleased with them.) And these companions were the ones who implemented the law justly and allowed others to follow their own religion and never forced anyone to accept islam.
Our beloved Prophet Muhammad (peace and blessings be upon him) said:
"The tribes of Israel broke into seventy- two sects. My Ummah shall break up into seventy-three sects. All of them will be in the Fire, except one: what I am upon and my Companions." [At-Tirmidhee]
You notice from that hadith that our beloved Prophet Muhammad (peace and blessings be upon him) doesn't mention the mughals, or the turks or some pakistani - but instead, he (peace be upon him) mentions the way of him (peace be upon him) and his companions (may Allaah be pleased with them) only. And i think you should take note of that, and we shouldn't always judge a whole group, just because someone else did it under the same title.
Also realise that Allaah Almighty says in the Qur'an:
"So if they believe in the like of that which you believe, they are rightly guided, but if they turn away, then they are only in opposition. So Allah will suffice you against them. And He is the All-Hearer, the All-Knower." [2:137]
So we're only rightly guided if we follow the way of Allaah's messenger (peace be upon him) and if we don't follow that way, we're in the opposition. So you can't use these people i.e. to use them as representatives for islam., but instead - refer to the messenger of Allaah (peace be upon him) and his companions (may Allaah be pleased with them.)
Allaah Almighty knows best.
Peace.