You have already listed quite a few reason to go with a remote control set such as Lion Chief. And as Barry said, you should also take a look at the MTH sets as well. They are both a good value, I think more so than the conventional sets. I think either one would be a good choice.
One added advantage to the MTH sets are the ability to upgrade to their full DCS control system and use the full features of the PS3 system that are already built in to the set's engine, and they will also run in conventional mode. I believe all PS3 sets have DCC capability as well. May be unlikely, but you are all set if that should ever come into play?
Of course the Lion Chief set will also run on a Legacy system still using it's own specific remote (and not the Legacy remote) and no added features will be available under Legacy, but I believe some of the Lion Chief sets are less expensive also. As for conventional operation, Lion Chief Plus will run in conventional, but Lion Chief will not.