It's been suggested previously, with discussion
here and
here, but now that SuperLemmix has become quite heavy on the rendering (what with Projectiles, Freezer, Ballooner, Superlemming mode, Rewind, Turbo FF, etc.) it might be time to go ahead and retire the minimap.
As with NeoLemmix, SuperLemmix currently offers the option to deactivate the HQ minimap, instead showing a monochrome rendering of the level (as per most L1 ports). However, SLX also provides an option to deactivate the minimap altogether, in order to shrink the screen horizontally without resizing the rest of the panel. Both options also result in a graphical performance uptick that's most noticeable on larger levels and those with a lot of animated objects.
Particularly, with the minimap deactivated, the improvement to graphical performance is remarkable. And with SLX moving further and further into "Lemmings 2" territory, perhaps culling the minimap is something of a no-brainer to offset the increasing demands on the graphics rendering.
Reasons for:
Significantly improved graphical performance

More panel space - room for extra skill/function buttons if so desired

Screen resizing becomes less problematic

Tidies up the interface

The ability to zoom in/out and fast-scroll pretty much obsoletes the minimap anyway
Reasons against:
The minimap is a traditional Lemmings feature, and goes somewhat hand in hand with "Classic Mode", which aims to present the game as close to the OG as possible

The minimap does occasionally come in handy for quickly jumping to another part of the level, and for seeing where lemmings are when they're offscreen

It's already optional - maybe this is enough, with players able to decide for themselves whether they'd rather have the traditional L1 display or a graphical performance boost
Another option would be to keep the minimap, but provide the option for it to be toggleable on and off whilst in-game; I'm pretty sure that this is possible. Furthermore, the game could periodically check to see what framerate it's running at, and if it drops below a certain threshold, a popup message could prompt the user to toggle the minimap off in order to gain a performance boost. That way, it's dynamically available depending on whether or not it
actually is impacting performance.
Thoughts?
Added a poll.