Note those opinions above are those of the poster.
Your clients are the ones that count.
(even if they are wrong. Just get it in writing so you get paid)
Also note: Basic Physics is still the rule.
Smaller, means something was REMOVED. Once gone, it is gone. (from that copy. Always keep a HiRes master handy)
Thus, making it
B I G G E R requires something be put IN those gaps or you get something like I just did. It takes a ton of computing to upscale with the best guess blend the fill.