In my market, the 5-LNB Ka/Ku ODUs are equipped with 99/101/103/110/119 LNBs (that's 99 degWest, NOT 93). As a rule, since all the satellites are in geostationary orbit (over the equator , at 22,236 miles over mean sea level) , and are situated over the Pacific Ocean at least 800 miles of the coast of South America, and being our planet is essentially spherical, the further west the satellite is (higher longitudinal numerical designation) the closer it is to the HORIZON (not to the EARTH, but to the horizon).
In all US markets, the difference in angular elevation among the two extreme satellites of a DTV multisat dish is substantial, sometimes as great as ten degrees.
That being said, if there already exists a triple-sat dish (101w/110w/119w) with clear line of sight to the 3 birds, generally a 5-sat dish swap would not present any additional LOS complications. This is because the 99w and 103w birds are relatively close to the 101w bird, and because the 103w bird is situated between the 101w and the 110w. However, IF THE INSTALLER CAN PROJECT ESTIMATED TREE GROWTH THAT COULD POSSIBLY OBSTRUCT LINE-OF-SIGHT WITHIN 12 MONTHS OF UPGRADE, HE WILL NOT PERFORM THE UPGRADE because DirecTV will back-charge him his full amount after they let you break your contract.