Asslamo Allaikum,
The Ummah is in a mess BECAUSE of letting go of Sunnah and COMPROMISING. If Khutbah is only delivered in Arabic as it should, it would force:
- People to learn Arabic so they will have to understand
- Imams will have to find time to teach people their Deen outside of Friday Prayers
- People who currently just listen to the Imam once in a week will have to attend even more!
Instead of sticking to Sunnah we have compromised the Deen and many people only come for Friday and say "Imam did a wicked Khutbah this week...."
The heart of a Muslim should be in the Masjid. In the ENTIRE HISTORY of Islam Friday Khutbah has NEVER BEEN the primary vehicle for imparting Deen by ANYONE! Imams/Scholars had their Halaqahs throughout and everywhere and Friday was Friday.
Secondly, long KHUTBAHS are AGAINST SUNNAH so when you speak English/Urdu or whatever you will invariably speak for long periods because you are explaining things...
Lastly, take a good look at all the compromises we make for the Deen and try to use our brain instead of beautiful Sunnah (which is based on Wahi) and you will find that we do more harm then good "ALWAYS"
Jazakullah Khairun
P.S: According to Imam Abu Haneefa (RA) Salah done after Khutbah in Non-Arabic is valid but that's not the point, here.