Can you describe the rattle? Can you record it? Sit you check that sun visors are snapped in? Seat belt buckle hitting pillar trim? Sounds can travel and be deceiving. You'd swear it's coming from one area when it's not.
Something hit them. Weed eater slinging small pebbles or something, lawn mower, BB gun etc. I can see the divot. The chip is from out to in nothing with the paint from in to out.
Cylinder deactivation will make it sound like a helicopter. Any aftermarket exhaust mod with DFM will sound like crap. Thank goodness my '22 refresh came with DFM delete. I removed the muffler, left the flapper in, screens open and installed a fitted stainless pipe. Sounds great. Not too loud but has a nice sound with no drone in the cab at any speed.
Absolutely not. All mids are very clear, loud and audible. The stock door Bose speakers carry mids. In fact, I put the bass and treble on max and down on the mid. Down on the midrange tones down the awful piercing 1K frequency range. Great sound out of these.
This tweeter will out perform all the ones you have listed by far. The specs, frequency response and sensitivity (db) out shine the 3. The GS25's have an 87db while the CDT has a 92.5 I have the Bose system and put these in. The chimes and warning signals still come through perfect. Read the specs on these.
https://www.woofersetc.com/p-es-hi-rez-26mm-1200isf-cdt-audio-ultra-high-high-end-1-silk-dome-tweeters-wideband-wide-range.html