The reverse charge mechanism is great. The alternative system was to register for VAT in all 28 EU member states and file returns in each state. The reverse charge mechanism means if you are exporting services, you only have to deal with the your local tax authority. (Unless your customers are not VAT registered, then you have to make sure you stay under the threshold in each state.)
Well, it's better than the old alternative you mentioned, but that's a bit like saying the MOSS scheme is great because otherwise you'd have to register and file returns in every EU member state where you sold a single £5 knitting pattern PDF from your kitchen table business. Being better than a system so insanely disproportionate and over-complicated that small businesses would have no hope of complying isn't particularly impressive.
Hopefully this will change in 2018 for companies making less than 100k EUR/month: https://ec.europa.eu/taxation_customs/business/vat/digital-s...