Bigger bikes are bigger all over.
I would definitely recommend raising your seat height if your seat post is long enough to do it safely (it'll have a minimum insertion mark near it's bottom). When you do that, however, you may find that you are bent over too far.
Make a mental list of all the things that bug you about your current bike. Recall that list when the time comes to buy your next bike.
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My greatest fear is all of my kids standing around my coffin and talking about "how sensible" dad was.