I note what you say about freeview, it may be due to weather, this time of year isotropic inversions or what CB's call skip is common. What happens is where the cold and hot air meets it forms a reflective tunnel, so a radio signal goes up into the inversion and travels for many miles before coming down, great except the TV aerial is often on a high point and on a mast so it works in reverse, it goes down to the inversion then goes many miles then up into space where no one can receive it. So really good for radio hams, but a pain for people watching TV.
The frequency used with satellite does not have this problem, the Sky satellites are close together and the dish is slightly oval so it can get them all, but there are also other satellites and question one is how many programs do you want? My son in law is Turkish so has a dish directed at Turkish satellites as well as British ones. The LNB is not a simple aerial but has commands sent to it to tell it for example what polarisation to use. So in the main every box needs one or two feeds (two if it can record as well as play) feeds from the LNB. I have a quad LNB so four cables into the house.
However you can piggy back receivers but second one is limited to signal the first has asked it to receive. So may be able to watch ITV and ITV 3 but not BBC Wales I never worked out what was bungled together, the problem is if the first box swaps channel the second box may fail.
This being on the same bungle also effects the electronic program guide, with SKY I have to admit it works well, you can go up to a week in advance, but other boxes are not as good, now and next seems to work with all the boxes I have, but where it falls down is record, my Ice Weasel box from Maplin needs the EPG to set the record function, if the program is shown the select it on guide and press record and all done, but without guide it's a real pain to set to record. It also does both freeview and freesat with same box, so very handy, got because it was HD.
As to moving signal to another room, you can use coax but it's a little hit and miss I find, it was OK if short run but no good for a long run, also screen size, watching on an old 14" in bedroom OK, but on a 32" screen leaves room for improvement, clearly you can only watch same program. With Sky boxes you can get a digieye and control box from other room, but not got that option with any of the other boxes.
In my house Sky fitted a dish at back of house, then latter refused to work on the dish because of health and safety even though they fitted it. So another dish was fitted at front of house, however not at top of house, it's on the bit that sticks out of the house being part of garage, I can access it from a pair of steps, having it lower down is really handy, be it adding more cables, or cleaning off the snow, it does not need to be high up, unlike freeview.
I want TV in my bed room in mother house and it is easier to fit second dish than run cables, high enough so no one walks in front of it is enough.