Another option, seemingly a good one.
It strips away L200's boomy bass and opens the door for using H91/2307 in a more optimum range. Typically, that's pushed down to 800 Hz in L200 upgrades, and it does sound a bit "horny" down there.
I've been running PT waveguides ~1 kHz, but that's near the limits of both them and 2235H. Heather's reporting here she likes PTH-1010 better run at 1.2 kHz. The smaller "F" versions certainly like a little higher, and LE14H-3's been working nicely at that frequency. This is all with 24 dB/octave active crossovers.
I haven't found the engineering specs for the 2234H if they're posted in these forums, but there are several suggestions by those who know that they'll play higher than 2235H, at some sacrifice of low-end extension, but with more "punchy" bass.
Guess I'll load up some 2234Hs and see how that combination sounds. Not sure exactly where to tune them, tho.
[Ah, well. Research! ]