First off, I just want to say my friends and I are somewhat new to the server and are having a great time. Thanks for all the hard work you guys put into maintaining it as a free service to everyone.
I had a suggestion specifically regarding Sleeper’s Tomb, but that may extend to other guild instanced content. As we try to gear everyone up for the next tier, we are doing our best to clear the ST bosses on spawn. As a result, our spawns are occurring later and later due to the 24 hour spawn time. The result is that we eventually have to miss a day because no one is able to stay up late enough to clear them. To avoid this, I was wondering if there was a way to put these on a 22 or even 23 hour spawn time. This way, we could do daily clears that wouldn't inevitably end up extending into the wee hours of the morning with all of our day jobs suffering.

Just an additional suggestion regarding the prismatic guardian specifically. The final art is a hotly contested drop considering it is a component both for the epic 2.5 and the Final Word augmentation. Is there a reason it is limited to dropping only 1 daily? As it stands to get our guild 2.5ed up we'd need to be trudging around in ST for two weeks or more, assuming no one wants the drop for the Final Word. Since most of the server content doesn't seem to be targeted at staying and farming one specific zone for long periods of time, this drop definitely seems to be limited more than it should be.
Thanks again for all you do, see you in game! Also, I apologize if this is already a topic, I am on mobile and may have missed it in the search results.