Investing so much for
I2 just to shoot in H264 from 60Mbps to 100mbps is not worth it. All the accessories and etc add a lot to the setup. Also in my comment I'm talkin about RAW! I1 can do 3.2Gbps at 4K and
I2 can do 4.0Gbps, no one can notice such a difference in raw, only some very few cases may show difference while grading. And yes X5S is 16MP while X5R is 12MP, but reality is that if you don't know what equipment is used and there is some gorgeous content with beautiful lighting and composition you'll not make the difference is it 12 or 16 MP or whatever Mbps that is over 60mbps. For example youtube is with 60mbps and I can see there extremelly well looking visuals on big 65 inch TV, they can be shot on proffesional cameras and downsampled to 60mbps as well it could be a Phantom and you to think that it's Mavic or Inspire. All this is very subjective when you are behind the scenes and simply know that the quality of your equipment is. I'm sure you can see some difference between 60 and 100 but honestly I have a lot of cameras and even 130Mbps have a lot of compression issues in sky gradients and other situations.
And the major usage of the Inspire family is dual operator, if you are not in to this type of work you'll be pretty fine with Mavic 3 or Mavic 3 Pro, they are only 2K euros.