Eh...?
sjvessey, you're obviously looking for a flame war.
Firing arcs... SFB, and SFC 1 and 2, features much wider arcs than SFC 3. They are, however, based on reality as much as on Star Trek. How often do you see Yoyager's port phaser bank firing starboard? In ST2 TWOK, the Enterprise's port phasers fire out to port, not starboard. By the design of the phaser, you could tell that it had a limited firing arc. So in the show, they can't actually fire where they want to.
Recharging phasers... Au contraire. In ST Nemesis, the Enterprise ends up with it's phaser coils burnt out. Every time a red alert is called, they charge phasers. Sure, they take a lot less time than in SFC/SFB, but think about it. Can you really prepare a 800 metre strip of phaser coils for firing in 3 seconds? I would say the show reduces this time because it's expedient, not because it reflects reality.
HETs... Never seen any ship in Star Trek perform a high energy turn. But the HET recharge rate makes sense... You make be able to turn a Galaxy on a dime using internal dampening fields and by overloading the structural integrity fields, but these would then need time to be repaired and prepared before they could next be used.
Shields dropping at warp... Didn't the Enterprise E get directly hit in Nemesis at warp? Causing her to lose warp power and hence drop in sub-light speeds? Enough said.
Low power of weapons... Try flying the Scimitar against a Valdore in Skirmish mode, I believe you'll find it has ample power. Also, why not drop your shields and try getting an alpha strike from a Warbird. Watch the pretty colours as your hull goes poof.
Star Trek ship combat compromises reality for the sake of time as well as simplicity. SFB evolved over many years as an experiment of what people could do given the technology available. Hence missiles, scatterpacks, wild weasels, t-bombs, ECM/ECCM and the like. It is very detailed, but far more accurate than any Star Trek battle.
You should try it. I reckon you'll find that not only is SFB combat different, it's also a lot better.