You can keep the shortcut for laso tool and Liquify tool (it is called elastify in Art Studio pro) on top of your toolbar just like procreate. Procreate does not offer any such customization while ASP does. I think devs should keep these two tools on top as default when the app is installed for the first time so that the people coming from Procerate feel at home. Photoshop and CSP users can always customize.

Suggestion 1- I agree. A dedicated base layer will be very helpful.
S3- ASP already has a ‘clear layer’ option. You can put it on the toolbar for quick access or map a quick menu slot to it.
S4- Yes, a slim version of all floating panels is needed. The brush panel is already slimmed down with the 4.1 update. I think devs are working on resizing option for layers and color wheel too.

Adjustment layers are not imported because we don't have many adjustment options from photoshop so imported document would look much different...

I have used brightness/contrast, curves and exposure layer. My issue is, these layers although present in the layers panel are not working like they don’t exist at all. Are you saying that the results of these layers will be different in desktop photoshop and art studio pro because that is still okay but the layers not working at all is the issue here.
If I open the same file in clip studio paint then all layers are working and showing the same photoshop kind of results as they should.

Ist issue
I am on iPad OS 16 and following things are not working.
1) Exporting the files from Procreate and then sending it to Art Studio pro is not working. (It worked on iPad OS 15)
2) Going to file manager and opening any psd file is also not working.
3) Opening Files app from Art studio pro and then trying to open any psd is also not working. The PSD file is greyed out.

Only way right now to open a PSD files is
File> New >New from file.

2nd issue
Is there any way to store files locally instead of storing on icloud? Some other useful option like G drive/ One drive or local storage is needed. Also, Is there any way I could save a psd file instead of art Studio own version and then save future edits on that psd files?

Features request
1) Autoshape editing after lifting the pen.

2) Brush memory markers on the brush side panels. Right now, Procreate has 5 of such markers. Art Studio pro with longer sliders could have 10. I think it is a very clever feature and supplements the need to have a dedicated brush size panel like Clip stuido paint.

3) Can we have a stroke feature? I read that you are implementing pen tool so stroke will be even more useful in future. You can put stroke in 'select' menu above 'contract' option.

4) Shift click lines. In photoshop, If we hold shift and then start putting brush dots anywhere on canvas then Photoshop automatically start joining the dots by straight lines. It is very helpful to draw things with straight lines precisely. It is far better than autoshape for straight line drawing.

Thank you

We will consider adding audio track in future versions...

That’s great. Thank you for considering this. You always listen to what your users want. 

Yeah, it would be really cool!
But using a dedicated video editor is probably the best way to go.
Luma Fusion is cheap and easy to use as an example.

Users with 2,4, and 6 GB of RAM will probably end up using virtual memory. And everything slows down to a crawl.
Original animation drawings, animation cache and then adding audio files to the mix will be problematic to fit into physical memory.
An iPad with 8-16GB ram will probably work. But personally, I can't afford one and I guess it's not only me. 

The audio track is not for post production or sound effects. It is there to sync the animation with the audio. Art studio pro can impose any limit on the size of the audio file such as, there will be just one audio track of xyz duration, the audio file must be below 5 MB or below 128 kbps or even lower. That doesn't matter. The audio needs not to exported with the animation either. It is there just to create animations in sync with the audio or voiceovers. High quality audio or sound effects can be added in video editors once the animation is ready. I have Luma fusion it does not even support keyframe easing. The feature is under Beta testing for the last one year with no release date so far. 

Since procreate never implements requested features (adjustment layers is still not there in Procreate which is lame) so an audio track could be a big opportunity for Art Studio pro. You could write on your app store page something like...

Art Studio pro, the best digital art app on iOS now with animation feature and an audio track. Yes, you heard it right, an audio track to sync your animations.

Both suggestions, colored menu and visible tools are great. I also want to see a search feature in quick menu options selection menu and an ability to change the function from quick menu itself.
Another function which would be great is multiple quick menus like Procreate has.