Advanced text effects

I'm currently going through what issues I'm going to encounter with a sitelen pona adaptation and I think I have everything figured out to start formatting everything - with one exception: How will bent or perspective-translated onomatopoeia affect long ligatures consisting of multiple characters? The latin characters are separated and scaled up or down to create a depth effect - or separate characters are (automatically) separately rotated along a path, but with continued lines, currently, it breaks everything into individual characters.

Let's assume, for simplicity, that we're talking about a (gapless) line formed like this: _________

I'm assuming it's a technical limitation, but with all the wonders that Inkscape and SVG are capable of, I thought I'd ask:

• SVG specifications mention method="stretch" - is this supported by both Inkscape and the server-side renderer?
• Can text be 3D rotated or grid-warped without having to be converted to a path? Could this be done a) in similar way to how the underwater text is distorted in E21P6, or b) by having an auto-updating copy which is converted to a path while the original remains an editable text?
• By any chance, are there other scripts that had to deal with this? (Arabic maybe?)