There's a nice feeling of success every time you get the timing just right for a SC+Burst.
First off, the timing required to hit a SC is simply an ability to count to 3. Timing a MB is a slight bit tougher, but I assure you once you've done it a few times, it's quite routine.
Burn style is mindless hammering of the macros, although there's still an element of timing I've found as I leveled up melee jobs.
Might I ask you what melee jobs you have leveled, and when? I ask because as you've alluded to, there is a degree of timing required in TP burn. In fact, it requires MORE timing than the traditional parties for more people. Let's examine what actually requires timing in the two situations.
Use job abilities (zerk, focus, jump, etc)
Cast shadows if applicable.
Announce TP (We don't all have windower TP)
Use job abilities
Cast shadows, or Seigan/TE as applicable. Much more prevalent in a burn.
For melee, the difference is huge. You don't have to announce TP, but you're generally recasting shadows or using Seigan/TE much more in a burn than a non-burn. For healers and buffers in a burn, the main difference is speed. You're going at a MUCH higher pace, so resting is greatly reduced. They can no more mindlessly spam macros here than before.
The ONLY job that required more timing in traditional parties than in melee burns, are the people no longer invited to melee burns. BLMs. So please, knock it off with the mantra of "TP burn is mindless spamming." Unless of course you're willing to admit traditional parties were the same damn mindless spamming.
As for the fun factor, I don't deny that SCs were fun. Hell, I MB songs on end game mobs whenever I can. But honestly, having to put up with pick-up melees who don't eat food and TP in crap gear, therefore they can't gain TP at a decent rate? No thanks.