Basic bookkeeping is enough. Annual audit reports are mandatory but cheap. Starting from 500-1000€. I read that mostly Indians are going to do that.
Everything is available in english but especially the banking sector needs someone that is warm with the contact person of the bank.
License alone costs 5 thousands. Most services charge 10 thousand with virtual office (which you need for a bank︀ account). That fee is fair if everything gets done well.
I suspected that! Audits will probably be required. The cost is going to skyrocket. This will be big business for accounting firms. Will the accounting firms be liable for their mistakes?
You can also set up a mainland company. Not really much difference anymore if you don't have qualifying income anyway, as far as I know.
Free zones may have a bit better service, but I would guess that even that is getting better.
I'm pretty sure the VAT rules are exactly the same both for mainland and freezone companies.
VAT is only relevant if you have UAE clients anyway. If all your clients are outside the UAE, I believe you can apply for an exemption. If you don't apply for the exemption, you have to file VAT returns, even if they are nil.