After all your bellyaching about the “low” ride height of your Miata, I decided to go down to my garage & measure the lowest points of my truck. It is pretty low for a fullsize, but I have engineered everything to be higher than the front crossmember & front airdam. This meant about 10-12 hrs in modifying the brand new $800 headers, custom fabbed trans crossmember, all of the exhaust tucked up in the frame, no other chassis/suspension component hanging lower, etc, etc.
My airdam is 3 1/8" from the ground. My front crossmember is 2 7/8" off of the ground (the oil pan actually is behind the x-member & lower, but too low to reach that far from the side/front of the truck while on the ground). My lower control arm mounts are 3" off of the ground. The spring pockets in the lower control arms are 2 3/4" from the ground. My frame rails are 3 1/4" at their lowest point. I have been driving this truck for about 10 years, exactly at this height, with the same exact tire size & do not have any major problems with bottoming out. Granted I do not use it as a DD, but you aren’t doing so, either. Sure, I have to be careful when entering a drivway, shopping plaza, etc., but my truck is extremely streetable. I am not concerned with the driveability of my truck and I have proven it by doing 2700 miles in a week on the '07 Power Tour (also 1600 miles in a week on the '02 Power Tour). I’ve never gotten it stuck & it rarely ever scrapes or bottoms out. If you would like, you can even come over here & measure it yourself, if you don’t believe me.
It sounds more to me that you are bored with the Miata & just want something new. If you had 3/4" of extra height, you would not be any worse off than my truck. You sure could pick that up with different tire diameters & possible spring upgrade.
Just my .02