Elidibus does not usually take a hands on approach, certainly, though he presumably will when it comes to having to deal with him once and for all. Whether that will be the case for 5.0 or not remains to be seen. Still, one of the past questions for a lore related Q&A session implied that the Ascians weren't behind Garlemald and it could be something else. I guess the question is, does Elidibus count as that 'something else' as he isn't necessarily loyal to the other Ascians or will there be additional complications to consider? I suspect there may be huge revelations in regards to Pureblood Garleans and their origins, explaining how they came to be and why they cannot typically manipulate aether.