Part of the logic for keeping some rights to the TM is for sites like: Probably SCAM https://zcashwallet.net/ Attention!
If someone holds the TM then they have the ability to file disputes with sketchy domains hosts/registrars to have them removed.
Or to prevent someone from making Zcashclassic, Zcash2, realZcash, liteZcash, Zcash_token, etc… and causing public confusion. In that case a TM can be filed with an exchange to prevent listing or other disputes against domains filed as mentioned above.
So in that regard I support having some sort of TM in place to prevent abuse, but I believe Josh is seeking some sort of assurance that it won’t be used to influence Zcash governance decisions.
I don’t know how TMs work enough to know how/if that kind of clause is possible. Most of time, as with copyright, it’s all or nothing and you must regularly enforce TM or you risk losing it.