We don't have the re-circulating Thetford, so take this with a grain of salt.
I would be a little concerned about adding more tissue to our tank, and about "wrapping up" the waste. I would rather our waste break apart quickly and the "wrapping" might hinder this. Don't want any lumps clogging up things.
And we don't have splash-back, even when pre-filling the bowl.
The pre-filling definitely helps with keeping the bowl clean. Others have suggested waxing the bowl or using something like Pam (? a frying pan non-stick spray) or Rain-off (a windshield treatment). But, so far, to get rid of residual streaks and gunk, we add some more water after flushing, let it sit for a while, then flush it clean next time (probably wouldn't do that if there were guests around but with just the two of us ...). Then a good cleaning when the trip's over.
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