It's about both. I do care about ROMs and also getting updates. Both are not mutually exclusive. For example, the Nexus gets the latest updates, and I'm quite sure it has a much more custom ROMs scene than most(if not ALL) phones out there. Again, both "the ability to root" and "getting the latest updates/features" are not mutually exclusive. You don't have to sacrifice one to get the other.
If Sony adds that feature while not neglecting the updates and custom Roms part, I will gladly get their phone. Not a problem. I don't mind Sony adding water proofing, just not at the expense of the others.
I am too. Regarding updates, I hope for my sake(and theirs as well) that Sony will prove me wrong.
Trust me on this...LTE has more fragmentation than 3G frequencies ever had with AWS and the other frequencies.
There's TD, FD or whatever LTE technology along to go with the different bands and blocks on the same frequency number.
Now in Europe, you may not notice a thing since everything may be unified there thanks to the EU and your regulations making it such, but once you leave Europe, it will be a mess.
For example here in USA, AT&T and Verizon have the same 700MHz LTE frequency overlap.
However you can't just take any LTE phone and assume it would work on whatever network because it has the same spectrum frequency.
Trust me, this LTE fragmentation mess is just beginning and makes the current 3G fragmentation a child's play thing.
Read this:
http://news.cnet.com/8301-1035_3-57422611-94/will-at-t-and-verizon-4g-lte-ever-be-compatible/
And also look at this chart:
Anyone who automatically thinks importing European LTE phones would be compatible with AT&T's LTE network because they share the same LTE frequency block could be in for a rude awakening. But I hope this LTE fragmentation deal is only a nightmare that never pans out.
We haven't had a "global" LTE phone yet. If there is one, I certainly haven't seen it.
There are lots of "global" 3G phones(the latest Nexus phones for example are all pentaband, not just tri-band or quad-band and they even support T-Mobile's AWS fragmentation frequency that almost no one else in the world uses).
I will let the people on XDA and elsewhere test the waters first on this "global" LTE mess before spending $800 on importing an LTE phone from Europe and automatically assuming that it would work here because it has the same frequency.