The heavily stretched starless Ha false colour image highlights the extended emission halo structures. You can see the SMC tail/bridge extending to the top right, and faint filaments towards the bottom of the frame which appear to extend towards the Magellanic stream. At the top left, there are two faint emission objects (circled white) in the outer halo, and I believe this is the first image to clearly show these faint objects.
To get an idea of the extent of the ionised halo, I aligned and overlayed my Ha falsecolour map with the Ha emission map detected by the Wisconsin Ha Mapper (WHAM) as published by Smart et al, 2019. WHAM is a 0.6m scope with a Fabry-Perot spectrometer designed to investigate the warm interstellar medium. Its design allows it to record a spectrum from a 1 degree area of sky, allowing WHAM to detect extremely faint emission albeit at a low spatial resolution. In this image you can see the WHAM Ha emission extending even further to the right into the Magellanic bridge and downwards into the Magellanic stream.
In my image you can also just discern some of the faint outer stellar halo of the SMC, which appears to give the SMC a slightly unfamiliar shape. Low surface brightness stellar halos and stellar streams are predicted in hierarchical galaxy formation models as a result of a succession of merger events with lower mass systems. To check this halo, I created an outline of the outer SMC halo from a stellar density map of the SMC made with Gaia DR2 sources as published in Mart ́ınez-Delgado 2019. The above image shows this outline overlaying a similarly aligned crop of my image, and you can see the stellar density halo outline closely matches that in my image.