Overall, do you find yourself ever, or even often, casting lower level spells using higher level spell slots? I see the utility in some obvious spells such as Cure Wounds and Bless, but overall I don't find myself doing so and don't really see the value. Am I missing something? With the way D&D spells scale, should a 3rd level Burning Hands be equivalent to 3rd level Fireball, or is the system made to give an edge to spells that are inherently a higher tier? Are there issues with the way spells scale, and if so, has anyone attempted to address the issues they find?
Personally in my table experience as a player (currently playing a Warlock), I have not really found much benefit to casting lower level spells at higher spell slots. Even though Warlock automatically upscales those lower spells to the highest spell slot I can cast, I find I pretty much stick to the higher level spells, with the exception of Hex and the occasional utility spell.
I ask because:
1) I'm always curious about other people's experiences and thoughts with using D&D.
2) I am the kind of person that looks at a system, tries to become an expert at that system, and then begins to use that knowledge to both homebrew new material and adjust the existing mechanics to refine balance. I did this with 3.5, basically rewriting the entire player's handbook. I have started doing this to an extent with 5e, but I have yet to tackle the spells and I just want to get a sense of what I might be in for if I try.