if we could get a function where you can highlight multiple tracks and drag a plugin from another track or from the browser onto one of the highlighted tracks and it populates across all of the highlighted tracks, and a function to collapse plugins into a lower zone like in bitwig and fender studio, do this and i promise people will be flocking to this daw , one more thing splice integration 100%
I don’t know about the dragging part (I don’t have Cubase open at the moment to try it), but Cubase’s Quick Link (Q-Link) function in the MixConsole makes it easy to add the same plugin to selected tracks, not to mention muting/soloing the tracks, making relative fader adjustments, and much more – even making plugin parameter changes across those tracks (though there are some limitations on that part, especially when using presets within a plugin).
To try this out for simply adding a plugin and setting initial parameters to match across all instances, go to the MixConsole, select the tracks you want to affect, engage the Q-Link button, then insert a plugin into one of the selected channels. It will only open one instance of the plugin, at which point, you can make changes to the parameters within that instance, and it will affect the instances in all selected channels. (If you don’t want to make the same changes across channels, either disengage Q-Link after that or unselect the channels whose plugin instances you don’t want to get the same changes.) I use this a lot for setting up background vocal tracks. Not only for the plugin setup, but also making sure all the tracks are going to the same group track (if I didn’t think to set that up when creating the tracks), setting any high-cut/low-cut/gain parameters, etc. I do have to remember to turn Q-Link off when making pan changes, though. 
BTW, you might want to consider adding a feature request tag to this post and making the subject more line more descriptive.
I’ve tried this before it didn’t work for me.
I’m assuming you specifically mean the dragging part. I just tried this now and can confirm that didn’t work despite Q-Link being activated. However, the adding plugins to one track with Q-Link activated across multiple tracks (including the track that is the target of the added insert) does work.
Interestingly, I just tried this with 3 plugins for some background vocal tracks, changing plugin settings, initially with just picking a preset, in the first of the tracks, then looking to confirm whether the settings changes were made across another of the tracks. They were on 2 of the 3 plugins (Waves Tune Real-Time Mono, and one of the UADx 1176 compressors). However, they were not on the other (Waves Vocal Rider Mono). So I went into Vocal Rider on one of the tracks and manipulated the plugin settings manually, and those also did not make it to the other tracks. So there may be something weird here in terms of when the changes to parameters come across and when they don’t.
The other thing I do to copy all inserts from one track to another is set up the plugins on one channel, then right click on the Inserts section header of that channel and choose copy from the pop-up menu. Then I go to each of the other channels, right-click on those channels’ inserts header and choose paste from the menu. Unfortunately, this also doesn’t recognize that Q-Link is enabled to allow doing the same operation across all selected channels – it only does one channel at a time.
I saw some Yoad Nevo videos on YouTube where he does that on a regular basis in Logic. Put a tape plugin and a console plugin (FrontDAW) across all the channels. Always wondered if you can do that in Cubase
There’s also a keyboard modifier. I can’t recall what it is exactly, but it’s along the lines of Option/Alt + click and/or Shift + click, that allows you to drag a copy of an insert to another track’s slot.
I use QLink because (other than VST parameters, as mentioned above) it’s more reliable. I’ve had a love affair with it since I began using it