For me, style affects the way I think about a rule. So a proscribed, identikit "block", while easy to understand, makes me think about magic in a regimented, technical, numerical way, rather than an eclectic, arcane, poetic way. I don't like spellbooks to look like spreadsheets, no matter how easy it makes things.
I definitely agree with this. Actually reading a spell description gives me a different emotional feeling about what I am doing than reading a straight statblock.
After playing 4E now for six years... I definitely have felt a loss in terms of how spellcasting
feels due to the way the power system is laid out. With both martial combat maneuvers and spells laid out, presented, and read in the exact same format... for me there is definitely less of a distinction between the two. Spells powers don't feel like spells as much anymore, because the read exactly like combat maneuvers.
Reading prose gets me in a different mindset as I am doing it. Spells involve intricate intellectualism to pull off... and reading prose and then parsing what it is talking about gets my brain more active in that kind of way, provoking a different feeling in me.
Power blocks felt GREAT for martial moves. Swordfighting is fast and tactically intricate... and thus reading an exploit quickly, then going to the grid to see positioning of everyone, and then making quick decisions on moving here, or attacking there, or knocking this guy down, or rushing over to stop that guy... the power statblock all helped bring that feeling out. But for spells? Yeah, the power block was quick, concise... but I eventually learned that spellcasting just
feels to me more artificial when it *is* that quick and concise.
Maybe it just comes down to something as simple as "You need to read your spellbook to prepare spells for the day"... and thus reading spell descriptions just help match my real-world action to what is happening in the game world and thus draws me in better? Could be. But at the end... I'll sacrifice a little bit of speed for a more evocative feeling when playing a PC that casts spells.