HNY 2019

With all your support and guidelines I got my Tier 1 Entrepreneur Visa and later I got approved for my family as well and settled in UK and and concentrating full focus on my business. Even though I have long time to worry or plan for the extension I just want to get certain things cleared to avoid any tension/frustration in the last time. I am fully aware of Investing 200K and creating local jobs. I see lot of posts regarding the extension like complex, and takes long time for any further decision making.
Can you please suggest me how the HO decide a business as complex, longer processing time for the extension. If I know these in advance I will make sure to not give any chance in running my business and I am trying to avoid any further interview as well. Running really a successful business with reliable investment and having enough job creations and proper bank accounts and Tax & VAT filing in the best way to save this frustration in the extension time..??
I hope you have seen many cases. In the initial application the HO may suspect everyone and they don't have the proper record to track and differentiate a genuine application and some application for the purpose of staying in the UK. But in the extension it is not going be like this as they have a proper track of any business we do in the UK. Can you please suggest/advise in what ways we keep our business profile as very strong to avoid any inconveniences in the extension.
Appreciate your thoughts from your experience so that I will follow from now onwards to run the business in the proper style to not worry too much about the extension.
Thanks in advance.
Matt.